Answer:
一 ICHI, ITSU, hito(tsu) - One
五 GO, itsu(tsu), itsu - Five
Add a single stroke each time to make a new character.
一 ICHI, ITSU, hito(tsu) - One
丁 CHOU, TEI - counter, block
干 KAN, hi(ru), ho(su) - get dry, dry, drink up
王 OU - king
五 GO, itsu(tsu), itsu - Five