osl osn oso osp osr oss ost osu ot- ota otb otc ote otl otn oto otp otr ots ott otu ou- oua ouc oue oul oun ouo oup our ous out p-p paa pab pac pae pal pan pao pap par pas pat pau pba pbb pbc pbe pbl pbn pbo pbp pbr pbs pbt pbu pca pcb pcc pce pcl pcn pco pcp pcr pcs pct pcu pea peb pec pee pel pen peo pep per pes pet peu pla plb plc ple pll pln plo plp plr pls plt plu pn- pna pnb pnc pne pnl pnn pno pnp pnr pns pnt pnu poa pob poc poe pol pon poo pop por pos pot pou ppa ppb ppc ppe ppl ppn ppo ppp ppr pps ppt ppu pra prb prc pre prl prn pro prp prr prs prt pru ps- psa psb psc pse psl psn pso psp psr pss pst psu pt- pta ptb ptc pte ptl ptn pto ptp ptr pts ptt ptu pua pub puc pue pul pun pup pur pus put puu ra- raa rab rac rae ral ran rao rap rar ras rat rau rba rbb rbc rbe rbl rbn rbo rbp rbr rbs rbt rbu rca rcb rcc rce rcl rcn rco rcp rcr rcs rct rcu re- rea reb rec ree rel ren reo rep rer res ret reu rla rlc rle rll rln rlo rlp rlr rls rlt rlu rna rnb rnc rnn rno rnp rnr rns rnt rnu roa rob roc roe rol ron roo rop ror ros rot rou rpa rpb rpc rpe rpl rpn rpo rpp rpr rps rpt rpu rra rrb rrc rrl rrn rrp rrr rrs rrt rru rsa rsb rsc rse rsl rsn rso rsp rsr rss rst rsu rta rtb rtc rte rtl rtn rto rtp rtr rts rtt rtu rua rub ruc rue run ruo rup rur rus rut ruu saa sab sac sae sal san sao sap sar sas sat sau sba sbb sbc sbe sbl sbn sbo sbp sbr sbs sbt sbu sca scb scc sce scl scn sco scp scr scs sct scu se- sea seb sec see sel sen seo sep ser ses set seu sla slb slc sle sll sln slo slp slr sls slt slu sna snb snc sne snl snn sno snp snr sns snt snu soa sob soc soe sol son soo sop sor sos sot sou spa spb spc spe spl spn spo spp spr sps spt spu sr- sra srb src sre srl srn sro srp srr srs srt ss- ssa ssb ssc sse ssl ssn sso ssp ssr sss sst ssu sta stb stc ste stl stn sto stp str sts stt stu sua sub suc sue sul sun suo sup sur sus sut suu taa tab tac tae tal tan tao tap tar tas tat tau tba tbb tbc tbe tbl tbn tbo tbp tbr tbs tbt tbu tca tcb tcc tce tcl tcn tco tcp tcr tcs tct tcu te- tea teb tec tee tel ten teo tep ter tes tet teu tla tlc tle tll tln tlo tlp tlr tls tlt tlu tna tnb tnc tne tnl tnn tno tnp tnr tns tnt to- toa tob toc toe tol ton too top tor tos tot tou tpa tpb tpc tpe tpl tpn tpo tpp tpr tps tpt tpu tra trb trc tre trl trn tro trp trr trs trt tru tsa tsb tsc tse tsl tsn tso tsp tsr tss tst tsu tta ttb ttc tte ttl ttn tto ttp ttr tts ttt ttu tua tub tuc tue tul tun tuo tup tur tus tut tuu ua- uaa uab uac uae ual uan uao uap uar uas uat uau uba ubb ubc ube ubl ubn ubo ubp ubr ubs ubt ubu uca ucb ucc uce ucl ucn uco ucp ucr ucs uct ucu uea ueb uec uee uel uen uep uer ues uet ula ulb ulc ule ull uln ulo ulp ulr uls ult ulu un- una unb unc une unl unn uno unp unr uns unt unu uoa uob uoc uoe uol uon uoo uop uor uos uot up- upa upb upc upe upn upo upp upr ups upt upu ur- ura urb urc ure url urn uro urp urr urs urt uru usa usb usc use usl usn uso usp usr uss ust usu uta utb utc ute utl utn uto utp utr uts utt utu uua uuc uue uun uur uus uut uuu