-ic a-a a-b a-c a-i aaa aab aac aai aak aan aao aar aav ab- aba abb abc abi abk abn abo abr abv ac- aca acb acc aci ack acn aco acr acv ai- aia aib aic aii aik ain aio air aiv aka akb akc aki akk akn ako akr akv an- ana anb anc ani ank ann ano anr anv aoa aob aoc aoi aok aon aoo aor aov ar- ara arb arc ari ark arn aro arr arv av- ava avb avc avi avk avn avo avr baa bab bac bai bak ban bao bar bav bba bbb bbc bbi bbk bbn bbo bbr bca bcb bcc bci bck bcn bco bcr bcv bi- bia bib bic bii bik bin bio bir biv bka bkb bkc bkk bkn bko bkr bkv bna bnb bnc bni bnk bnn bno bnr bnv boa bob boc boi bok bon boo bor bov bra brb bri brk brn bro brr brv bva bvb bvc bvi bvk bvn bvo bvr bvv c-- caa cab cac cai cak can cao car cav cba cbb cbc cbi cbk cbn cbo cbr cbv cca ccb ccc cci cck ccn cco ccr ccv ci- cia cib cic cii cik cin cio cir civ cka ckb ckc cki cko cn- cna cnb cnc cni cnn cno cnr cnv co- coa cob coc coi cok con coo cor cov cra crb crc cri crk crn cro crr crv cva cvb cvc cvi cvk cvn cvo cvr cvv i-v ia- iaa iab iac iai ian iao iar iav iba ibb ibc ibi ibk ibn ibo ibr ibv ica icb icc ici ick icn ico icr icv iia iib iic iii iin iio iir ika ikb ikc iki ikk iko ikr ikv in- ina inb inc ini ink inn ino inr inv io- ioa iob ioc ioi ion ioo ior iov ir- ira irb irc iri irk irn iro irr irv iva ivb ivc ivi ivo ivr ivv ka- kaa kab kac kai kak kan kao kar kav kba kbb kbc kbi kbk kbn kbo kbr kca kcb kcc kci kck kcn kcr kia kib kic kii kik kin kio kir kiv kkb kkc kki kkk kkn kkr kkv kn- kna knc kni knk knn kno knr koa kob koc koi kok kon koo kor kra krc kri krk krn kro krr krv kva kvb kvi kvk kvn kvo kvr kvv n-i naa nab nac nai nak nan nao nar nav nba nbb nbc nbi nbk nbn nbo nbr nbv nca ncb ncc nci nck ncn nco ncr ncv nia nib nic nii nik nin nio nir niv nka nkc nki nkk nkn nko nkr nna nnb nnc nni nnk nnn nno nnv no- noa nob noc noi nok non noo nor nov nra nrb nrc nri nrk nrn nro nrr nrv nva nvb nvc nvi nvk nvn nvv o-i oaa oab oac oai oak oan oao oar oav ob- oba obb obc obi obk obn obo obr obv oc- oca ocb occ oci ock ocn oco ocr ocv oia oib oic oii oik oin oio oir oiv oka okb okc oki okk oko okr on- ona onb onc oni onk onn ono onr oo- ooa oob ooc ooi ook oon ooo oor oov or- ora orb orc ori ork orn oro orr orv ov- ova ovb ovc ovi ovo ovv ra- raa rab rac rai rak ran rao rar rav rba rbb rbc rbi rbk rbn rbo rbr rca rcb rcc rci rcn rco rcr rcv ria rib ric rii rik rin rio rir riv rkb rkc rkk rko rkv rna rnb rnc rni rnn rno rnr rnv roa rob roc roi rok ron roo ror rov rra rrb rrc rri rrk rrn rrr rva rvb rvc rvi rvn rvo rvr rvv v-a vaa vab vac vai vak van vao var vav vba vbc vbi vbk vbo vbr vbv vca vcc vci vcn vco vcr vi- via vib vic vii vik vin vio vir viv vka vkb vn- vna vni vno vnr vnv voa vob voc voi vok von voo vor vov vra vrb vrc vri vrk vrn vrr vva vvb vvc vvi vvo vvr vvv