riwier[6],
rewii[5], rewio[5], rowie[5], rewir[5], rower[5],
iwie[4], wiei[4], rwie[4], ower[4], rewo[4],
rei[3], ero[3], roi[3], wie[3], wii[3], ewo[3], owe[3], iwo[3], owi[3], wio[3], rew[3], wre[3], wir[3], rwo[3], wrr[3],
ii[2], eo[2], er[2], re[2], or[2], ro[2], ew[2], we[2], iw[2],
