User:Kc kennylau/ablaut

Class 1: beißen
Present: bʰeyd- (e grade) > bīt-  > bīz-  > beiß-
Past:    bʰoyd- (o grade) > bait- > beiz- > biss-
Past2:   bʰyd-  (ø grade) > bit-  > bizz- > biss-

Class 2: saufen
Present: sewp- > sūp-  > sūf- > sauf-
Past:    sowp- > sawp- > ?    > soff-
Past2:   swp-  > sup-  > ?    > söff-

Class 3a: finden
Present: pent- > finþ- > find- > vind- > find-
Past:    pont- > fanþ- > fand- > vand- > fand-
Past2:   pnt-  > fund- > fund- > vund- > fund-

Class 3b: fechten
Present:  pek-t-     > feht-    > feht-      > fecht-
Present2: pek-t-i-   > fihti-   > fiht-      > ficht-
Past3:    pk-t-h₁nós > fuhtanaz > (gi)fohtan > gefochten
Past:                             foht-      > focht- (remodelled from past3)
Past2:                            fohti-     > föcht- (remodelled from past3)

Class 3b: erlöschen
Present:  d̩-s-lesk- > uzlesk- > erlesc- > erlösch-
Present2:             uzlisk- > erlisc- > erlisch-
Past:     d̩-s-losk- > uzlosk- > erlosc- > erlosch-
Past2:    d̩-s-lsk-  > uzlusk- > erlusc- > erlösch-

Class 4: kommen
Present:  gʷem- > kwem- > quem- > kom- > komm-
Past:     gʷom- > kwam- > quam- > ?    > kam-
Past2:            kwēm- > quām- > ?    > käm-

Class 4: sprechen
Present:  spreg- > sprek- > sprehh- > sprech-
Present2:          sprik- > sprihh- > sprich-
Past:     sprog- > sprak- > sprahh- > sprach-
Past2:             sprēk- > sprāhh- > spräch-
Past3:             sprok- > sprohh- > sproch-

Class 4: nehmen
Present:  nem- > nem- > nem- > nehm-
Present2:        nim- > nim- > nimm-
Past:     nom- > nam- > nam- > nahm-
Past2:           nēm- > nām- > nähm-
Past3:           nom- > nom- > nomm-

Class 5: liegen
Present: legʰ-je- > ligj- > ligg- > lieg-
Past:    logʰ     > lag-  > lag-  > lag-
Past2:              lēg-  > lāg-  > läg-
Past3:              leg-  > leg-  > leg-

Class 5: lesen
Present:  les- > les- > les- > les- > les-
Present2:        lis- > ?    > ?    > lies-
Past:     los- > las- > las- > las- > las-
Past2:           lēs- > lās- > ?    > läs-
Past3:           les- > les- > les- > les-

Class 6: laden
Present: kleh₂- > hlaþ- > hlad-  > lad- > lad-
Present2:                 hlād-  > ?    > läd-
Past:    kloh₂- > hlōþ- > hluod- > ?    > lud- (compare tō > zuo > zu)
Past2:                                    lüd-

Class 6: fahren
Present:  por-éje- > far- > far-  > fahr-
Present2:                   fār-  > fähr-
Past:                fōr- > fuor- > fuhr- (Proto-G: analogy from hlaþ~hlōþ)
Past2:                              führ- (OHG: fuori > füöri > füörə > führe)

Class 6: heben
Present: kh₂pjé- > habj- > hev- > heb-
Past:    kh₂op-  > hōb-  > hov- > hob-
Past2:                            höb- (OHG: hovi > hövi > höbə > höbe)
Past3:                            hüb- (OHG: hovi > hüvi > hübə > hübe)

Class 6: schwören
Present: swor-je- > swarj- > swer- > schwör-
Past:               swōr-  > swōr- > schwor-
Past2:                               schwör-
Past3:                               schwür-

Class 7: rufen
Present: kérowp- > hrōp-  > hruof- > ruf-
Past:    krewp-  > hriop- > ?      > rief- (Compare Old Saxon hrōpan, hriop)

Class 7: ratan
Present:  h₁reh₁dʰ- > rēd- > rāt- > rat-
Present2:                           rät- (OHG: rātit > rætit > rät)
Past:     h₁roh₁dʰ- > rōd- > rīt- > riet-