bolo[7], lobo[7], obol[7], lolo[6], loop[6], polo[6], pool[6], boro[6], robo[6], loro[5], rolo[5], poro[5], ropo[5],
bol[6], lob[6], lol[5], bor[5], rob[5], lor[4], rol[4], por[4], pro[4], rop[4], oro[3],
bo[4], op[3], po[3], or[2], ro[2],
