a-a a-c aaa aac aak aan aao aar aav ac- aca acc ack acn aco acr acv aka akc akk akn ako akr akv an- ana anc ank ann ano anr anv aoa aoc aok aon aoo aor aov ar- ara arc ark arn aro arr arv av- ava avc avk avn avo avr c-- caa cac cak can cao car cav cca ccc cck ccn cco ccr ccv cka ckc cko cn- cna cnc cnn cno cnr cnv co- coa coc cok con coo cor cov cra crc crk crn cro crr crv cva cvc cvk cvn cvo cvr cvv ka- kaa kac kak kan kao kar kav kca kcc kck kcn kcr kkc kkk kkn kkr kkv kn- kna knc knk knn kno knr koa koc kok kon koo kor kra krc krk krn kro krr krv kva kvk kvn kvo kvr kvv naa nac nak nan nao nar nav nca ncc nck ncn nco ncr ncv nka nkc nkk nkn nko nkr nna nnc nnk nnn nno nnv no- noa noc nok non noo nor nov nra nrc nrk nrn nro nrr nrv nva nvc nvk nvn nvv oaa oac oak oan oao oar oav oc- oca occ ock ocn oco ocr ocv oka okc okk oko okr on- ona onc onk onn ono onr oo- ooa ooc ook oon ooo oor oov or- ora orc ork orn oro orr orv ov- ova ovc ovo ovv ra- raa rac rak ran rao rar rav rca rcc rcn rco rcr rcv rkc rkk rko rkv rna rnc rnn rno rnr rnv roa roc rok ron roo ror rov rra rrc rrk rrn rrr rva rvc rvn rvo rvr rvv v-a vaa vac vak van vao var vav vca vcc vcn vco vcr vka vn- vna vno vnr vnv voa voc vok von voo vor vov vra vrc vrk vrn vrr vva vvc vvo vvr vvv