a-a a-t aaa aak aan aao aar aas aat aka akk akn ako akr aks an- ana ank ann ano anr ans ant aoa aok aon aoo aor aos aot ar- ara ark arn aro arr ars art as- asa ask asn aso asr ass ast at- ata atn ato atr ats att k-t ka- kaa kak kan kao kar kas kat kkk kkn kkr kks kkt kn- kna knk knn kno knr knt koa kok kon koo kor kos kot kra krk krn kro krr krs krt ksa ksk ksn kso ksr kss kst kta ktk ktn kto ktr kts ktt naa nak nan nao nar nas nat nka nkk nkn nko nkr nks nkt nna nnk nnn nno nns nnt no- noa nok non noo nor nos not nra nrk nrn nro nrr nrs nrt nsa nsk nsn nso nsr nss nst nta ntk ntn nto ntr nts ntt oaa oak oan oao oar oas oat oka okk oko okr oks on- ona onk onn ono onr ons ont oo- ooa ook oon ooo oor oos oot or- ora ork orn oro orr ors ort os- osa osk osn oso osr oss ost ot- ota otk otn oto otr ots ott ra- raa rak ran rao rar ras rat rkk rko rks rkt rna rnn rno rnr rns rnt roa rok ron roo ror ros rot rra rrk rrn rrr rrs rrt rsa rsk rsn rso rsr rss rst rta rtk rtn rto rtr rts rtt saa sak san sao sar sas sat sk- ska skk sko skr sks skt sna snk snn sno snr sns snt soa sok son soo sor sos sot sr- sra srk srn sro srr srs srt ss- ssa ssk ssn sso ssr sss sst sta stk stn sto str sts stt taa tak tan tao tar tas tat tka tkk tko tkr tks tkt tna tnk tnn tno tnr tns tnt to- toa tok ton too tor tos tot tra trk trn tro trr trs trt tsa tsk tsn tso tsr tss tst tta ttk ttn tto ttr tts ttt