pnn pno pnp pnr pns pnt pnu poc pod poe poi pon poo pop por pos pot pou ppc ppd ppe ppi ppj ppn ppo ppp ppr pps ppt ppu prc prd pre pri prn pro prp prr prs prt pru ps- psc psd pse psi psj psn pso psp psr pss pst psu pt- ptc ptd pte pti ptj ptn pto ptp ptr pts ptt ptu puc pud pue pui puj pun pup pur pus put puu rcc rcd rce rci rcj rcn rco rcp rcr rcs rct rcu rdc rdd rde rdi rdj rdn rdo rdp rdr rds rdt rdu re- rec red ree rei ren reo rep rer res ret reu ric rid rie rii rin rio rip rir ris rit rjc rjp rjr rnc rnd rni rnn rno rnp rnr rns rnt rnu roc rod roe roi roj ron roo rop ror ros rot rou rpc rpd rpe rpi rpn rpo rpp rpr rps rpt rpu rrc rrd rri rrn rrp rrr rrs rrt rru rsc rsd rse rsi rsj rsn rso rsp rsr rss rst rsu rtc rtd rte rti rtj rtn rto rtp rtr rts rtt rtu ruc rud rue rui run ruo rup rur rus rut ruu scc scd sce sci scj scn sco scp scr scs sct scu sdc sdd sde sdi sdj sdn sdo sdp sdr sds sdt sdu se- sec sed see sei sej sen seo sep ser ses set seu sic sid sie sii sij sin sio sip sir sis sit siu sjc sjd sje sji sjj sjp sjr sjs sjt sju snc snd sne sni snj snn sno snp snr sns snt snu soc sod soe soi soj son soo sop sor sos sot sou spc spd spe spi spn spo spp spr sps spt spu sr- src srd sre sri srj srn sro srp srr srs srt ss- ssc ssd sse ssi ssj ssn sso ssp ssr sss sst ssu stc std ste sti stj stn sto stp str sts stt stu suc sud sue sui sun suo sup sur sus sut suu tcc tcd tce tci tcj tcn tco tcp tcr tcs tct tcu tdc tdd tde tdi tdn tdo tdp tdr tds tdt tdu te- tec ted tee tei tej ten teo tep ter tes tet teu tic tid tie tii tin tio tip tir tis tit tiu tjc tjd tje tji tjo tjp tjr tjs tju tnc tnd tne tni tnn tno tnp tnr tns tnt to- toc tod toe toi toj ton too top tor tos tot tou tpc tpd tpe tpi tpj tpn tpo tpp tpr tps tpt tpu trc trd tre tri trn tro trp trr trs trt tru tsc tsd tse tsi tsj tsn tso tsp tsr tss tst tsu ttc ttd tte tti ttn tto ttp ttr tts ttt ttu tuc tud tue tui tuj tun tuo tup tur tus tut tuu ucc ucd uce uci ucj ucn uco ucp ucr ucs uct ucu udc udd ude udi udj udn udo udp udr uds udt udu uec ued uee uei uen uep uer ues uet uic uid uie uii uin uio uip uir uis uit uiu ujc uji ujo ujs un- unc und une uni unn uno unp unr uns unt unu uoc uod uoe uoj uon uoo uop uor uos uot up- upc upd upe upi upj upn upo upp upr ups upt upu ur- urc urd ure uri urn uro urp urr urs urt uru usc usd use usi usj usn uso usp usr uss ust usu utc utd ute uti utj utn uto utp utr uts utt utu uuc uue uun uur uus uut uuu