oper[5], pero[5], werp[5], ower[4], rewo[4],
per[4], rep[4], por[4], pro[4], rop[4], prr[4], ero[3], ewo[3], owe[3], rew[3], wre[3], rwo[3], wrr[3],
pe[3], op[3], po[3], eo[2], er[2], re[2], or[2], ro[2], ew[2], we[2],
