opono[6],
bond[7], dobo[7], bono[6], obon[6], pond[6], opon[5], pono[5],
bod[6], bon[5], pod[5], dno[4], don[4], odo[4], ono[3],
bo[4], do[3], od[3], op[3], po[3], no[2], on[2],
