Show:
Irregular verbs (easy)
Irregular verbs (medium)
Irregular verbs (hard)
Irregular nouns (easy)
Irregular nouns (hard)
100

Go

Went, Gone

100
Flee

Fled, Fled

100

Cast

Cast, Cast

100

Mouse 

Mice

100

Fish

Fish

200

Sit

Sat, Sat
200

Slay

Slew, Slain

200

Arise

Arose, Arisen

200

Tooth

Teeth

200

Cactus

Cacti

300

Draw

Drew, Drawn

300

Speed

Sped, Sped

300

Dwell

Dwelt, Dwelt

300

Foot

Feet

300

Goose

Geese

400

Cut

Cut, Cut

400

Weep 

Wept, Wept

400

Forsake 

forsook, forsaken

400

Leaf

Leaves

400

Ox

Oxen

500

Choose

Chose, Chosen 

500

Strive

Strove, Striven

500

Lay

Lie, Laid

500

Person 

People

500

Mongoose

Mongooses