a-a a-b a-i aaa aab aah aai aao aar aav ab- aba abb abh abi abo abr abv aha ahb ahh ahi aho ahr ahv ai- aia aib aih aii aio air aiv aoa aob aoh aoi aoo aor aov ar- ara arb arh ari aro arr arv av- ava avb avh avi avo avr baa bab bah bai bao bar bav bba bbb bbh bbi bbo bbr bha bhb bhh bhi bho bhr bhv bi- bia bib bih bii bio bir biv boa bob boh boi boo bor bov bra brb brh bri bro brr brv bva bvb bvh bvi bvo bvr bvv h-i haa hab hah hai hao har hav hba hbb hbh hbi hbo hbr hbv hha hhb hhh hhi hho hhr hhv hia hib hih hii hio hir hiv hoa hob hoh hoi hoo hor hov hr- hra hrb hrh hri hro hrr hrv hv- hva hvb hvo hvr hvv i-v ia- iaa iab iah iai iao iar iav iba ibb ibh ibi ibo ibr ibv iha ihb ihh ihi iho ihr ihv iia iib iih iii iio iir io- ioa iob ioh ioi ioo ior iov ir- ira irb iri iro irr irv iva ivb ivi ivo ivr ivv o-i oaa oab oah oai oao oar oav ob- oba obb obh obi obo obr obv oha ohh ohi oho ohr oia oib oii oio oir oiv oo- ooa oob ooh ooi ooo oor oov or- ora orb orh ori oro orr orv ov- ova ovb ovh ovi ovo ovv ra- raa rab rah rai rao rar rav rba rbb rbh rbi rbo rbr rh- rha rhb rhh rhi rho rhr rhv ria rib rih rii rio rir riv roa rob roh roi roo ror rov rra rrb rrh rri rrr rva rvb rvh rvi rvo rvr rvv v-a vaa vab vah vai vao var vav vba vbh vbi vbo vbr vbv vh- vha vhb vhi vho vi- via vib vii vio vir viv voa vob voh voi voo vor vov vra vrb vrh vri vrr vva vvb vvi vvo vvr vvv