iiii iiio iioi iioo iiop ilio ill- illi illo illp illy iloo ilxx ioii ioio iolo iooi iooo iopl ipil ipix iplo ipop ippo ippy ixil ixxi liii lili lill lilo lily lio- lip- lipi lipl lipo lipp lipy lixi lixy liyl llll lloo loix loli loll lolo loly lool loop lopi lopp lox- loxo lppl lxii lxxi lxxx lyly lyo- lyx- oiii oily oiyl olio olli ollo olly oolo oooo opii opio opo- oppi oppo oppy oxi- oxo- oxox oxxo oxy- oxyl oyly piip pil- pili pill pilo pily pipi pipo pipp pipy pixl pixo pixx pixy piyo plio plip ploo plop ploy plpp poil poio poix poli poll polo poly pool poop pop- popi popo popp popy poxy poyo ppli pplo pppo pppp pyl- pyli pyll pyo- pypy xiii xil- xili xill xilp xixi xlii xlix xlox xolo xoxo xoyo xxii xxix xxxi xxxo xxxx xxxy xyl- xylo yili yill ylli yoix yoli yoll yolo yolp yoly yool yoop yopo yopy yoyo yyyy