-ic a-a a-b a-c a-i aaa aab aac aai aan aao aar aav ab- aba abb abc abi abn abo abr abv ac- aca acb acc aci acn aco acr acv ai- aia aib aic aii ain aio air aiv an- ana anb anc ani ann ano anr anv aoa aob aoc aoi aon aoo aor aov ar- ara arb arc ari arn aro arr arv av- ava avb avc avi avn avo avr baa bab bac bai ban bao bar bav bba bbb bbc bbi bbn bbo bbr bca bcb bcc bci bcn bco bcr bcv bi- bia bib bic bii bin bio bir biv bna bnb bnc bni bnn bno bnr bnv boa bob boc boi bon boo bor bov bra brb bri brn bro brr brv bva bvb bvc bvi bvn bvo bvr bvv c-- caa cab cac cai can cao car cav cba cbb cbc cbi cbn cbo cbr cbv cca ccb ccc cci ccn cco ccr ccv ci- cia cib cic cii cin cio cir civ cn- cna cnb cnc cni cnn cno cnr cnv co- coa cob coc coi con coo cor cov cra crb crc cri crn cro crr crv cva cvb cvc cvi cvn cvo cvr cvv i-v ia- iaa iab iac iai ian iao iar iav iba ibb ibc ibi ibn ibo ibr ibv ica icb icc ici icn ico icr icv iia iib iic iii iin iio iir in- ina inb inc ini inn ino inr inv io- ioa iob ioc ioi ion ioo ior iov ir- ira irb irc iri irn iro irr irv iva ivb ivc ivi ivo ivr ivv n-i naa nab nac nai nan nao nar nav nba nbb nbc nbi nbn nbo nbr nbv nca ncb ncc nci ncn nco ncr ncv nia nib nic nii nin nio nir niv nna nnb nnc nni nnn nno nnv no- noa nob noc noi non noo nor nov nra nrb nrc nri nrn nro nrr nrv nva nvb nvc nvi nvn nvv o-i oaa oab oac oai oan oao oar oav ob- oba obb obc obi obn obo obr obv oc- oca ocb occ oci ocn oco ocr ocv oia oib oic oii oin oio oir oiv on- ona onb onc oni onn ono onr oo- ooa oob ooc ooi oon ooo oor oov or- ora orb orc ori orn oro orr orv ov- ova ovb ovc ovi ovo ovv ra- raa rab rac rai ran rao rar rav rba rbb rbc rbi rbn rbo rbr rca rcb rcc rci rcn rco rcr rcv ria rib ric rii rin rio rir riv rna rnb rnc rni rnn rno rnr rnv roa rob roc roi ron roo ror rov rra rrb rrc rri rrn rrr rva rvb rvc rvi rvn rvo rvr rvv v-a vaa vab vac vai van vao var vav vba vbc vbi vbo vbr vbv vca vcc vci vcn vco vcr vi- via vib vic vii vin vio vir viv vn- vna vni vno vnr vnv voa vob voc voi von voo vor vov vra vrb vrc vri vrn vrr vva vvb vvc vvi vvo vvr vvv