raa rad rai ral ram ran rao rap rar ras rat rda rdd rdi rdl rdm rdn rdo rdp rdr rds rdt ria rid rii ril rim rin rio rip rir ris rit rla rld rli rll rlm rln rlo rlp rlr rls rlt rma rmd rmi rml rmm rmn rmo rmp rmr rms rmt rna rnd rni rnm rnn rno rnp rnr rns rnt roa rod roi rol rom ron roo rop ror ros rot rpa rpd rpi rpl rpm rpn rpo rpp rpr rps rpt rra rrd rri rrl rrm rrn rrp rrr rrs rrt rsa rsd rsi rsl rsm rsn rso rsp rsr rss rst rta rtd rti rtl rtm rtn rto rtp rtr rts rtt saa sad sai sal sam san sao sap sar sas sat sda sdd sdi sdl sdm sdn sdo sdp sdr sds sdt sia sid sii sil sim sin sio sip sir sis sit sla sld sli sll slm sln slo slp slr sls slt sma smd smi sml smm smn smo smp smr sms smt sna snd sni snl snm snn sno snp snr sns snt soa sod soi sol som son soo sop sor sos sot spa spd spi spl spm spn spo spp spr sps spt sr- sra srd sri srl srm srn sro srp srr srs srt ss- ssa ssd ssi ssl ssm ssn sso ssp ssr sss sst sta std sti stl stm stn sto stp str sts stt taa tad tai tal tam tan tao tap tar tas tat tda tdd tdi tdl tdm tdn tdo tdp tdr tds tdt tia tid tii til tim tin tio tip tir tis tit tla tld tli tll tlm tln tlo tlp tlr tls tlt tma tmd tmi tml tmm tmn tmo tmp tmr tms tmt tna tnd tni tnl tnm tnn tno tnp tnr tns tnt to- toa tod toi tol tom ton too top tor tos tot tpa tpd tpi tpl tpm tpn tpo tpp tpr tps tpt tra trd tri trl trm trn tro trp trr trs trt tsa tsd tsi tsl tsm tsn tso tsp tsr tss tst tta ttd tti ttl ttm ttn tto ttp ttr tts ttt