a-a a-b a-i aaa aab aai aan aar aau aav ab- aba abb abi abn abr abu abv ai- aia aib aii ain air aiu aiv an- ana anb ani ann anr anu anv ar- ara arb ari arn arr aru arv au- aua aub aui aun aur auv av- ava avb avi avn avr avu b-u baa bab bai ban bar bau bav bba bbb bbi bbn bbr bbu bi- bia bib bii bin bir biu biv bna bnb bni bnn bnr bnu bnv bra brb bri brn brr bru brv bua bub bui bun bur buu bva bvb bvi bvn bvr bvu bvv i-v ia- iaa iab iai ian iar iau iav iba ibb ibi ibn ibr ibu ibv iia iib iii iin iir iiu in- ina inb ini inn inr inu inv ir- ira irb iri irn irr iru irv iu- iua iub iui iur iva ivb ivi ivr ivu ivv n-i naa nab nai nan nar nau nav nba nbb nbi nbn nbr nbu nbv nia nib nii nin nir niu niv nna nnb nni nnn nnu nnv nra nrb nri nrn nrr nru nrv nua nub nui nun nur nuu nuv nva nvb nvi nvn nvu nvv ra- raa rab rai ran rar rau rav rba rbb rbi rbn rbr rbu ria rib rii rin rir riv rna rnb rni rnn rnr rnu rnv rra rrb rri rrn rrr rru rua rub rui run rur ruu ruv rva rvb rvi rvn rvr rvu rvv ua- uaa uab uai uan uar uau uav uba ubb ubi ubn ubr ubu ubv uia uib uii uin uir uiu un- una unb uni unn unr unu unv ur- ura urb uri urn urr uru uua uun uur uuu uva uvb uvu uvv v-a vaa vab vai van var vau vav vba vbi vbr vbv vi- via vib vii vin vir viu viv vn- vna vni vnr vnu vnv vra vrb vri vrn vrr vru vur vuv vva vvb vvi vvr vvv