otb otc ote oti otl otm oto otp otr ots ott otu ou- ouc oue oui oul oum ouo oup our ous out p-p pbb pbc pbe pbi pbl pbm pbo pbp pbr pbs pbt pbu pcb pcc pce pci pcl pcm pco pcp pcr pcs pct pcu peb pec pee pei pel pem peo pep per pes pet peu pib pic pie pii pil pim pio pip pir pis pit piu plb plc ple pli pll plm plo plp plr pls plt plu pmb pmc pme pmi pml pmm pmo pmp pmr pms pmt pmu pob poc poe poi pol pom poo pop por pos pot pou ppb ppc ppe ppi ppl ppm ppo ppp ppr pps ppt ppu prb prc pre pri prl prm pro prp prr prs prt pru ps- psb psc pse psi psl psm pso psp psr pss pst psu pt- ptb ptc pte pti ptl ptm pto ptp ptr pts ptt ptu pub puc pue pui pul pum pup pur pus put puu rbb rbc rbe rbi rbl rbm rbo rbp rbr rbs rbt rbu rcb rcc rce rci rcl rcm rco rcp rcr rcs rct rcu re- reb rec ree rei rel rem reo rep rer res ret reu rib ric rie rii ril rim rio rip rir ris rit rlc rle rli rll rlm rlo rlp rlr rls rlt rlu rmb rmc rme rmi rml rmm rmo rmp rmr rms rmt rob roc roe roi rol rom roo rop ror ros rot rou rpb rpc rpe rpi rpl rpm rpo rpp rpr rps rpt rpu rrb rrc rri rrl rrm rrp rrr rrs rrt rru rsb rsc rse rsi rsl rsm rso rsp rsr rss rst rsu rtb rtc rte rti rtl rtm rto rtp rtr rts rtt rtu rub ruc rue rui rum ruo rup rur rus rut ruu sbb sbc sbe sbi sbl sbm sbo sbp sbr sbs sbt sbu scb scc sce sci scl scm sco scp scr scs sct scu se- seb sec see sei sel sem seo sep ser ses set seu sib sic sie sii sil sim sio sip sir sis sit siu slb slc sle sli sll slm slo slp slr sls slt slu smb smc sme smi sml smm smo smp smr sms smt smu sob soc soe soi sol som soo sop sor sos sot sou spb spc spe spi spl spm spo spp spr sps spt spu sr- srb src sre sri srl srm sro srp srr srs srt ss- ssb ssc sse ssi ssl ssm sso ssp ssr sss sst ssu stb stc ste sti stl stm sto stp str sts stt stu sub suc sue sui sul sum suo sup sur sus sut suu tbb tbc tbe tbi tbl tbm tbo tbp tbr tbs tbt tbu tcb tcc tce tci tcl tcm tco tcp tcr tcs tct tcu te- teb tec tee tei tel tem teo tep ter tes tet teu tib tic tie tii til tim tio tip tir tis tit tiu tlc tle tli tll tlm tlo tlp tlr tls tlt tlu tmb tmc tme tmi tml tmm tmo tmp tmr tms tmt tmu to- tob toc toe toi tol tom too top tor tos tot tou tpb tpc tpe tpi tpl tpm tpo tpp tpr tps tpt tpu trb trc tre tri trl trm tro trp trr trs trt tru tsb tsc tse tsi tsl tsm tso tsp tsr tss tst tsu ttb ttc tte tti ttl ttm tto ttp ttr tts ttt ttu tub tuc tue tui tul tum tuo tup tur tus tut tuu ubb ubc ube ubi ubl ubo ubp ubr ubs ubt ubu ucb ucc uce uci ucl ucm uco ucp ucr ucs uct ucu ueb uec uee uei uel uem uep uer ues uet uib uic uie uii uil uim uio uip uir uis uit uiu ulb ulc ule uli ull ulm ulo ulp ulr uls ult ulu um- umb umc ume umi uml umm umo ump umr ums umt umu uob uoc uoe uol uom uoo uop uor uos uot up- upb upc upe upi upm upo upp upr ups upt upu ur- urb urc ure uri url urm uro urp urr urs urt uru usb usc use usi usl usm uso usp usr uss ust usu utb utc ute uti utl utm uto utp utr uts utt utu uuc uue uum uur uus uut uuu