pigw[7], giro[6], igro[6], irgo[6], rogi[6], piwo[5], wpoi[5],
goi[5], ogi[5], gir[5], igr[5], irg[5], gro[5], ogr[5], wig[5], poi[4], por[4], pro[4], rop[4], piw[4], roi[3], iwo[3], owi[3], wio[3], wir[3], rwo[3], wow[3],
go[4], pi[3], op[3], po[3], or[2], ro[2], iw[2],
