-up oo- ooo oop oor oos oot oov op- opo opp opr ops opt opv opy or- oro orp orr ors ort oru orv ory os- oso osp osr oss ost osu osv ot- oto otp otr ots ott otu otv ou- ouo oup our ous out ov- ovo ovp ovs ovv oyo oys p-p poo pop por pos pot pou pov poy ppo ppp ppr pps ppt ppu ppv pro prp prr prs prt pru prv pry ps- pso psp psr pss pst psu psv psy pt- pto ptp ptr pts ptt ptu ptv pty pup pur pus put puu puy pvo pvp pvr pvs pvt pvu pvv py- pyo pyr pys pyt pyu roo rop ror ros rot rou rov roy rpo rpp rpr rps rpt rpu rpv rrp rrr rrs rrt rru rso rsp rsr rss rst rsu rsv rto rtp rtr rts rtt rtu rtv rty ruo rup rur rus rut ruu ruv ruy rvo rvp rvr rvs rvt rvu rvv rvy ry- ryo ryr rys ryu ryy soo sop sor sos sot sou sov soy spo spp spr sps spt spu spv spy sr- sro srp srr srs srt srv sry ss- sso ssp ssr sss sst ssu ssv sto stp str sts stt stu stv sty suo sup sur sus sut suu suv suy svo svp svr svs svt svu svv svy sy- syp syr sys syt syu to- too top tor tos tot tou tov toy tpo tpp tpr tps tpt tpu tpv tro trp trr trs trt tru trv try tso tsp tsr tss tst tsu tsv tsy tto ttp ttr tts ttt ttu ttv tty tuo tup tur tus tut tuu tuv tuy tvo tvp tvr tvs tvt tvu tvy tyo typ tyr tys tyt uoo uop uor uos uot up- upo upp upr ups upt upu upv ur- uro urp urr urs urt uru ury uso usp usr uss ust usu usv uto utp utr uts utt utu utv uty uur uus uut uuu uvo uvs uvu uvv uyo uys uyu voo vop vor vos vot vou vov voy vpo vpp vpr vps vpt vpu vrp vrr vrs vrt vru vry vso vsp vsr vss vst vsu vsv vto vtr vts vtt vtu vtv vty vup vur vus vut vuv vvo vvr vvs vvt vvv vyp vyt yoo yop yor yos yot you yoy ypo yps ypu yro yrp yrs yrt yru yso ysp ysr yss yst ysu ysy yto ytp ytr yts ytt ytu ytv yuo yup yur yus yut yuu yuv yuy yvo yvr yvy yys yyt yyu yyy