a-a a-b a-i aaa aab aad aai aan aao aar aav ab- aba abb abd abi abn abo abr abv ad- ada adb add adi adn ado adr adv ai- aia aib aid aii ain aio air aiv an- ana anb and ani ann ano anr anv aoa aob aod aoi aon aoo aor aov ar- ara arb ard ari arn aro arr arv av- ava avb avd avi avn avo avr baa bab bad bai ban bao bar bav bba bbb bbd bbi bbn bbo bbr bda bdb bdd bdi bdo bdr bdv bi- bia bib bid bii bin bio bir biv bna bnb bnd bni bnn bno bnr bnv boa bob bod boi bon boo bor bov bra brb brd bri brn bro brr brv bva bvb bvd bvi bvn bvo bvr bvv daa dab dad dai dan dao dar dav dba dbb dbd dbi dbn dbo dbr dbv dda ddb ddd ddi ddn ddo ddr di- dia dib did dii din dio dir div dna dnb dnd dni dnn dno dnr doa dob dod doi don doo dor dov dra drb drd dri drn dro drr drv dva dvb dvd dvi dvn dvr i-d i-v ia- iaa iab iad iai ian iao iar iav iba ibb ibd ibi ibn ibo ibr ibv ida idb idd idi idn ido idr idv iia iib iid iii iin iio iir in- ina inb ind ini inn ino inr inv io- ioa iob iod ioi ion ioo ior iov ir- ira irb ird iri irn iro irr irv iva ivb ivd ivi ivo ivr ivv n-i naa nab nad nai nan nao nar nav nba nbb nbd nbi nbn nbo nbr nbv nda ndb ndd ndi ndn ndo ndr ndv nia nib nid nii nin nio nir niv nna nnb nni nnn nno nnv no- noa nob nod noi non noo nor nov nra nrb nrd nri nrn nro nrr nrv nva nvb nvd nvi nvn nvv o-i oaa oab oad oai oan oao oar oav ob- oba obb obd obi obn obo obr obv oda odb odd odi odn odo odr odv oia oib oid oii oin oio oir oiv on- ona onb ond oni onn ono onr oo- ooa oob ood ooi oon ooo oor oov or- ora orb ord ori orn oro orr orv ov- ova ovb ovd ovi ovo ovv ra- raa rab rad rai ran rao rar rav rba rbb rbd rbi rbn rbo rbr rda rdb rdd rdi rdn rdo rdr rdv ria rib rid rii rin rio rir riv rna rnb rnd rni rnn rno rnr rnv roa rob rod roi ron roo ror rov rra rrb rrd rri rrn rrr rva rvb rvd rvi rvn rvo rvr rvv v-a vaa vab vad vai van vao var vav vba vbd vbi vbo vbr vbv vdb vdd vdi vdo vdr vdv vi- via vib vid vii vin vio vir viv vn- vna vnd vni vno vnr vnv voa vob vod voi von voo vor vov vra vrb vrd vri vrn vrr vva vvb vvi vvo vvr vvv