1. Group #1 (one word)
1.1. cut
1.2. cost
1.3. hit
1.4. hurt
1.5. let
1.6. put
1.7. shut
2. Group #2 (two words)
2.1. with "t"
2.1.1. sleep/slept
2.1.2. keep/kept (/é/)
2.1.3. dream/(dreamt)dreamed
2.1.4. spell/spelt
2.1.5. sit/sat
2.1.6. get/got
2.1.7. shoot/shot
2.1.8. lose/lost
2.1.9. build/built
2.1.10. spend/spent
2.1.11. send/sent
2.1.12. lend/lent
2.2. with "d"
2.2.1. find/found
2.2.2. have/had
2.2.3. hear/heard--- / hərd/
2.2.4. hold/held
2.2.5. make/made
2.2.6. pay/paid
2.2.7. read/read(/red/)
2.2.8. say/said(/SAD/)
2.2.9. sell/sold
2.2.10. stand/stood
2.2.11. tell/told
2.3. inf/past participle same
2.3.1. come/came/come
2.3.2. run/ran/run
2.3.3. become/became/become
2.4. with "ught" /ót/
2.4.1. think/thought
2.4.2. fight/fought
2.4.3. teach/taught
2.4.4. bring/brought
2.4.5. buy/bought
2.4.6. catch/caught
3. Group #3(three words)
3.1. i - a=/é/ -u =/˜u/
3.1.1. ring/rang/rung
3.1.2. begin/began/begun
3.1.3. drink/drank/drunk
3.1.4. sing/sang/sung
3.1.5. swim/swam/swum
3.2. ew /u/ - ówn
3.2.1. blow/blew/blown
3.2.2. draw/drew/drawn
3.2.3. fly/flew/flown
3.2.3.1. grow/grew/grown
3.2.4. know/knew/known
3.2.5. show/showed/shown
3.2.6. throw/threw/thrown
3.3. with "en"
3.3.1. be/was-were/been
3.3.1.1. Wake/woke/woken
3.3.2. beat/beat/beaten
3.3.3. bite/bit/bitten
3.3.4. break/broke/broken
3.3.5. choose/chose/chosen
3.3.6. eat/ate/eaten
3.3.7. fall/fell/fallen
3.3.8. forget/forgot/forgotten
3.3.9. give/gave/given
3.3.10. hide/hid/hidden
3.3.11. ride/rode/ridden
3.3.12. rise/rose/risen
3.3.13. see/saw/seen
3.3.14. speak/spoke/spoken
3.3.15. steal/stole/stolen
3.3.16. take/took/taken
3.3.17. write/wrote/written