rio rip rir ris rit rkb rkk rkm rko rkp rks rkt rma rmb rmi rmm rmn rmo rmp rmr rms rmt rna rnb rni rnm rnn rno rnp rnr rns rnt roa rob roi rok rom ron roo rop ror ros rot rpa rpb rpi rpk rpm rpn rpo rpp rpr rps rpt rra rrb rri rrk rrm rrn rrp rrr rrs rrt rsa rsb rsi rsk rsm rsn rso rsp rsr rss rst rta rtb rti rtk rtm rtn rto rtp rtr rts rtt saa sab sai sak sam san sao sap sar sas sat sba sbb sbi sbk sbm sbn sbo sbp sbr sbs sbt sia sib sii sik sim sin sio sip sir sis sit sk- ska skb ski skk skm sko skp skr sks skt sma smb smi smk smm smn smo smp smr sms smt sna snb sni snk snm snn sno snp snr sns snt soa sob soi sok som son soo sop sor sos sot spa spb spi spk spm spn spo spp spr sps spt sr- sra srb sri srk srm srn sro srp srr srs srt ss- ssa ssb ssi ssk ssm ssn sso ssp ssr sss sst sta stb sti stk stm stn sto stp str sts stt taa tab tai tak tam tan tao tap tar tas tat tba tbb tbi tbk tbm tbn tbo tbp tbr tbs tbt tia tib tii tik tim tin tio tip tir tis tit tka tkb tkk tkm tko tkp tkr tks tkt tma tmb tmi tmk tmm tmn tmo tmp tmr tms tmt tna tnb tni tnk tnm tnn tno tnp tnr tns tnt to- toa tob toi tok tom ton too top tor tos tot tpa tpb tpi tpk tpm tpn tpo tpp tpr tps tpt tra trb tri trk trm trn tro trp trr trs trt tsa tsb tsi tsk tsm tsn tso tsp tsr tss tst tta ttb tti ttk ttm ttn tto ttp ttr tts ttt