a-a a-t aaa aak aan aao aas aat aka akk akn ako aks an- ana ank ann ano ans ant aoa aok aon aoo aos aot as- asa ask asn aso ass ast at- ata atn ato ats att k-t ka- kaa kak kan kao kas kat kkk kkn kks kkt kn- kna knk knn kno knt koa kok kon koo kos kot ksa ksk ksn kso kss kst kta ktk ktn kto kts ktt naa nak nan nao nas nat nka nkk nkn nko nks nkt nna nnk nnn nno nns nnt no- noa nok non noo nos not nsa nsk nsn nso nss nst nta ntk ntn nto nts ntt oaa oak oan oao oas oat oka okk oko oks on- ona onk onn ono ons ont oo- ooa ook oon ooo oos oot os- osa osk osn oso oss ost ot- ota otk otn oto ots ott saa sak san sao sas sat sk- ska skk sko sks skt sna snk snn sno sns snt soa sok son soo sos sot ss- ssa ssk ssn sso sss sst sta stk stn sto sts stt taa tak tan tao tas tat tka tkk tko tks tkt tna tnk tnn tno tns tnt to- toa tok ton too tos tot tsa tsk tsn tso tss tst tta ttk ttn tto tts ttt