コ Katakana "Ko"
ト Katakana "To" or The "Boku" radical - oracle
ナ Katakana "No" or The "No" radical - diagonal sweeping stroke
ハ Katakana "Ha" or HACHI, ya(ttsu), ya(tsu), ya, yo - eight
ロ Katakana "Ro" or KOU, kuchi - mouth
Arrange them like this:
ナナナ
ハロナナ
トコ
槽 SOU - tub, tank, vat