Answer:
四 SHI, yo(tsu), yo(ttsu), yo, yon - four
右 U, YUU, migi - right
夕 SEKI, yuu - evening
電 DEN - electricity
学 GAKU, mana(bu) - learn, study
There may of course be others, but these are what I found.
匹 HITSU, hiki - compare, alone, counter for animals
石 SEKI, SHAKU, ishi - stone
タ Katakana "Ta"
雷 RAI, kaminari - thunder
字 JI, aza - letter, village