Vowel changes for passive morphology, RV = root vowel, u, y context:

!!!Bisyllabic

|| Root  || u2->u  || u2->o  || contlex         || comm
| ee     |  e      | iä      | C_PASS_SH_RVSH   | ok
| eRV    |  e      | iä      | C_PASS_SH_RVSH   | ok
| ää     |  a      | á       | C_PASS_SH_RVSH   | ok
| äRV    |  a      | á       | C_PASS_SH_RVSH   | ok
| aRV    |  oo     | a       | C_PASS_SH_RLEN   | -
| aRV    |  o      | a       | C_PASS_SH_RVSH   | ok
| oRV    |  u      | o       | C_PASS_SH_RVSH   | ok
| oRV    |  o      | o       | C_PASS_SH_RVSH   | ok
| o5RV   |  u      | u       | C_PASS_SH        | -
| iRV    |  i      | i       | C_PASS_SH_RVSH   | ok
| o      |  o      | a       | C_PASS_SH_RVSH   | -
| ye     |  uo     | uá      | C_PASS_SH_RLEN   | ok 
| ie     |  ie     | iä      | C_PASS_SH_RVSH   | ok
| uá     |  o      | uá      | C_PASS_SH_RLEN   | -
| uá     |  oo     | uá      | C_PASS_SH_RLEN ? | -
| u5á    |  uo     | uá      | C_PASS_SH        | ok
| uá     |  a      | á       | C_PASS_SH        | ok
| uRV    |  u      | u       | C_PASS_SH        | -


!!âđ stems

|| Root || u  || j   || Examples || lex-der-yaml || passlex
|  ää   |  a  |  á   | čaahâđ     | aassad  | C_PASS_SH_RVSH
|  ee   |  e  |  iä  | peerrâđ    | aassad  | C_PASS_SH_RVSH
|  äRV  |  a  |  á   | kavnâđ     | kavnad  | C_PASS_SH_RVSH
|  aRV  |  oo |  a   | moonnâđ    | moonnad | C_PASS_SH_RLEN
|  oRV  |  u  |  o   | luuhâđ     | toohad  | C_PASS_SH_RVSH
|  eRV  |  e  |  iä  | spellâđ    | spellad | C_PASS_SH_RVSH
|  iRV  |  i  |  i   | viggâđ     | soddad  | C_PASS_SH_RVSH
|  iRV  |  i  |  i   | viiššâđ    | viissad | C_PASS_SH_RVSH
|  oRV  |  u  |  o   | kulgâđ     | kulgad  | C_PASS_SH_RVSH
|  o    |  o  |  a   | toppâđ     | kulgad  | C_PASS_SH_RVSH
|  ye   |  uo |  uá  | vuollâđ    | vuollad | C_PASS_SH_RLEN
|  ye   |  uo |  uá  | ruottâđ    | ruottad | C_PASS_SH_RLEN
|  ie   |  ie |  iä  | kiessâđ    | kiessad | C_PASS_SH_RVSH
|  ie   |  ie |  iä  | viežžâđ    | viežžad | C_PASS_SH_RVSH
|  uá   |  o  |  uá  | oppâđ      | oppad   | C_PASS_SH_RLEN ?
|  uá   |  o  |  uá  | toollâđ    | toollad | C_PASS_SH_RLEN ?
|  oRV  |  u  |  o   | puurrâđ    | toohad  | C_PASS_SH_RVSH
|  aRV  |  o  |  a   | toohâđ     | toohad  | C_PASS_SH_RVSH


!!iđ stems

|| Root || u  || j   || Examples  || lex-der-yaml  || passlex
|  äRV  |  a  |  á   | kästiđ      | kastid | C_PASS_SH
|  eRV  |  e  |  iä  | celkkiđ     | celkkid, _ID | C_PASS_SH_RVSH
|  ää   |  a  |  á   | čäälliđ     | caallid | C_PASS_SH_RVSH
|  ye   |  uo |  uá  | vyelgiđ     | vyelgid | C_PASS_SH_RLEN
|  ee   |  e  |  iä  | peehiđ      | keessid | C_PASS_SH
|  uá   |  a  |  á   | uáđđiđ      | uaddid  | C_PASS_SH
|  ie   |  ie |  iä  | tiettiđ     | tiettid | C_PASS_SH


!!eđ stems

|| Root || u  || j   || Examples || lex-der-yaml  || passlex
|  aRV  |  o  |  a   | kalveđ     | kalved | C_PASS_SH_RVSH
|  o5RV |  u  |  u   | toideđ     | pohted | C_PASS_SH
|  uRV  |  u  |  u   | suldeđ     | pihted | C_PASS_SH
|  iRV  |  i  |  i   | pihteđ     | pihted | C_PASS_SH


!!uđ stems


|| Root || u  || j   || Examples || lex-der-yaml  || passlex
|  u5á  |  uo |  uá  | čuárvuđ    | cuarvud, _UD | C_PASS_SH
|  uá   |  oo |  uá  | kuárruđ    | kuarrud      | C_PASS_SH_RLEN



!!ođ stems

|| Root || u  || j   || Examples || lex-der-yaml   || passlex
|  a     | a  |  a   |  paččođ    | _OD | C_PASS_SH
|  i     | i  |  i   |  rimččođ	  | _OD | C_PASS_SH
|  u     | u  |  u   |  čurttođ	  | _OD | C_PASS_SH
|  o     | o  |  o   |  koččođ	  | koccod, _OD | C_PASS_SH
|  a     | a  |  a   |  laigođ	  | _OD | C_PASS_SH
|  u     | u  |  u   |  puiccođ	  | _OD | C_PASS_SH


!!oođ stems

No passive here.



!!eeđ stems

|| Root || u  || j   || Examples || lex-der-yaml || passlex
|  aRV   | o  |  a   |  anneeđ    | anneed, _EED  | C_PASS_SH_RVSH
|  oRV   | u  |  o   |  jotteeđ	  | _EED          | C_PASS_SH_RVSH
|  aRV   | o  |  a   |  pahheeđ   | pahheed, 2SYLL_PAHHEED | C_PASS_SH_RVSH
|  uRV   | u  |  u   |  suđđeeđ   | _EED, check this if it does not fit | C_PASS_SH_RVSH
|  iRV   | i  |  i   |  itteeđ    | _EED | C_PASS_SH_RVSH


!!!Threesyllabic stems

... is a different story