osg osi osn oso osp osr oss ost osu ot- ota otb otc otg oti otn oto otp otr ots ott otu ou- oua ouc oui oun ouo oup our ous out p-p paa pab pac pag pai pan pao pap par pas pat pau pba pbb pbc pbg pbi pbn pbo pbp pbr pbs pbt pbu pca pcb pcc pcg pci pcn pco pcp pcr pcs pct pcu pga pgb pgc pgg pgi pgn pgo pgp pgr pgs pgt pia pib pic pig pii pin pio pip pir pis pit piu pn- pna pnb pnc png pni pnn pno pnp pnr pns pnt pnu poa pob poc pog poi pon poo pop por pos pot pou ppa ppb ppc ppg ppi ppn ppo ppp ppr pps ppt ppu pra prb prc prg pri prn pro prp prr prs prt pru ps- psa psb psc psg psi psn pso psp psr pss pst psu pt- pta ptb ptc ptg pti ptn pto ptp ptr pts ptt ptu pua pub puc pug pui pun pup pur pus put puu ra- raa rab rac rag rai ran rao rap rar ras rat rau rba rbb rbc rbg rbi rbn rbo rbp rbr rbs rbt rbu rca rcb rcc rcg rci rcn rco rcp rcr rcs rct rcu rga rgb rgc rgg rgi rgn rgo rgp rgr rgs rgt ria rib ric rig rii rin rio rip rir ris rit rna rnb rnc rng rni rnn rno rnp rnr rns rnt rnu roa rob roc rog roi ron roo rop ror ros rot rou rpa rpb rpc rpg rpi rpn rpo rpp rpr rps rpt rpu rra rrb rrc rrg rri rrn rrp rrr rrs rrt rru rsa rsb rsc rsg rsi rsn rso rsp rsr rss rst rsu rta rtb rtc rtg rti rtn rto rtp rtr rts rtt rtu rua rub ruc rug rui run ruo rup rur rus rut ruu saa sab sac sag sai san sao sap sar sas sat sau sba sbb sbc sbg sbi sbn sbo sbp sbr sbs sbt sbu sca scb scc scg sci scn sco scp scr scs sct scu sga sgb sgc sgg sgi sgn sgo sgp sgr sgs sgt sgu sia sib sic sig sii sin sio sip sir sis sit siu sna snb snc sng sni snn sno snp snr sns snt snu soa sob soc sog soi son soo sop sor sos sot sou spa spb spc spg spi spn spo spp spr sps spt spu sr- sra srb src srg sri srn sro srp srr srs srt ss- ssa ssb ssc ssg ssi ssn sso ssp ssr sss sst ssu sta stb stc stg sti stn sto stp str sts stt stu sua sub suc sug sui sun suo sup sur sus sut suu taa tab tac tag tai tan tao tap tar tas tat tau tba tbb tbc tbg tbi tbn tbo tbp tbr tbs tbt tbu tca tcb tcc tcg tci tcn tco tcp tcr tcs tct tcu tga tgb tgc tgg tgi tgn tgo tgp tgr tgs tgt tgu tia tib tic tig tii tin tio tip tir tis tit tiu tna tnb tnc tng tni tnn tno tnp tnr tns tnt to- toa tob toc tog toi ton too top tor tos tot tou tpa tpb tpc tpg tpi tpn tpo tpp tpr tps tpt tpu tra trb trc trg tri trn tro trp trr trs trt tru tsa tsb tsc tsg tsi tsn tso tsp tsr tss tst tsu tta ttb ttc ttg tti ttn tto ttp ttr tts ttt ttu tua tub tuc tug tui tun tuo tup tur tus tut tuu ua- uaa uab uac uag uai uan uao uap uar uas uat uau uba ubb ubc ubg ubi ubn ubo ubp ubr ubs ubt ubu uca ucb ucc ucg uci ucn uco ucp ucr ucs uct ucu uga ugb ugc ugg ugi ugn ugo ugp ugr ugs ugt ugu uia uib uic uig uii uin uio uip uir uis uit uiu un- una unb unc ung uni unn uno unp unr uns unt unu uoa uob uoc uog uon uoo uop uor uos uot up- upa upb upc upg upi upn upo upp upr ups upt upu ur- ura urb urc urg uri urn uro urp urr urs urt uru usa usb usc usg usi usn uso usp usr uss ust usu uta utb utc uti utn uto utp utr uts utt utu uua uuc uug uun uur uus uut uuu