rie rig rii rik rin rio rir ris rit rkb rke rkg rkk rko rks rkt rna rnb rng rni rnn rno rnr rns rnt roa rob roe rog roi rok ron roo ror ros rot rra rrb rrg rri rrk rrn rrr rrs rrt rsa rsb rse rsg rsi rsk rsn rso rsr rss rst rta rtb rte rtg rti rtk rtn rto rtr rts rtt saa sab sae sag sai sak san sao sar sas sat sba sbb sbe sbg sbi sbk sbn sbo sbr sbs sbt se- sea seb see seg sei sek sen seo ser ses set sga sgb sge sgg sgi sgk sgn sgo sgr sgs sgt sia sib sie sig sii sik sin sio sir sis sit sk- ska skb ske skg ski skk sko skr sks skt sna snb sne sng sni snk snn sno snr sns snt soa sob soe sog soi sok son soo sor sos sot sr- sra srb sre srg sri srk srn sro srr srs srt ss- ssa ssb sse ssg ssi ssk ssn sso ssr sss sst sta stb ste stg sti stk stn sto str sts stt taa tab tae tag tai tak tan tao tar tas tat tba tbb tbe tbg tbi tbk tbn tbo tbr tbs tbt te- tea teb tee teg tei tek ten teo ter tes tet tga tgb tge tgg tgi tgk tgn tgo tgr tgs tgt tia tib tie tig tii tik tin tio tir tis tit tka tkb tke tkg tkk tko tkr tks tkt tna tnb tne tng tni tnk tnn tno tnr tns tnt to- toa tob toe tog toi tok ton too tor tos tot tra trb tre trg tri trk trn tro trr trs trt tsa tsb tse tsg tsi tsk tsn tso tsr tss tst tta ttb tte ttg tti ttk ttn tto ttr tts ttt