oooo ooos oops oost ootp oots ooty opo- opos oppo opps oppy opsy opto opts osoo osos osso ossy osts osyp osyt oto- otoo otos otoy otpp otso otto otts oyss oyst poop poos poot pop- popo popp pops popt popy poso poss post posy poto pots pott poty poyo poys ppos pppo pppp ppps ppss ppts pptt psos pspp psps psso psst psts psy- psys ptop pyo- pyos pyot pypy pyss pyst pytt s-os soop soos soot sooy sopo sopp sops sopy soso soss sost soto sotp sots soyo soys soyt spoo spop spos spot spoy spps spso spsp spss spst spto spts spy- spys ssop ssot sspo ssps sspt ssss sstp ssts stoo stop stos stot stoy stpp stps stss stys sypo syso syss syst sytt to-y toos toot top- topo topp tops topt toso toss tost tosy toto tots tott toty toyo toys toyt tppp tptp tpyo tsop tsos tsoy tspo tsps tspt tsst tsts tsys ttop ttoy ttss tttt ttys typ- typo typp typy tyss tyst tyto tytt tyty yoop yoot yopo yopy yoso yost yott yoyo ysop yyyy