a-a a-b a-i aaa aab aad aag aai aao aar aav ab- aba abb abd abg abi abo abr abv ad- ada adb add adg adi ado adr adv ag- aga agb agd agg agi ago agr agv ai- aia aib aid aig aii aio air aiv aoa aob aod aog aoi aoo aor aov ar- ara arb ard arg ari aro arr arv av- ava avb avd avg avi avo avr baa bab bad bag bai bao bar bav bba bbb bbd bbg bbi bbo bbr bda bdb bdd bdg bdi bdo bdr bdv bga bgb bgd bgg bgi bgo bgr bgv bi- bia bib bid big bii bio bir biv boa bob bod bog boi boo bor bov bra brb brd brg bri bro brr brv bva bvb bvd bvg bvi bvo bvr bvv daa dab dad dag dai dao dar dav dba dbb dbd dbg dbi dbo dbr dbv dda ddb ddd ddg ddi ddo ddr dga dgd dgg dgi dgr di- dia dib did dig dii dio dir div doa dob dod dog doi doo dor dov dra drb drd drg dri dro drr drv dva dvb dvd dvg dvi dvr g-d gaa gab gad gag gai gao gar gav gba gbd gbg gbi gbo gbr gbv gda gdb gdd gdi gdo gdr gdv gga ggb ggd ggg ggi ggo ggr ggv gia gib gid gig gii gio gir giv goa gob god gog goi goo gor gov gra grb grd grg gri gro grr grv gva gvb gvd gvg gvi gvo gvr i-d i-v ia- iaa iab iad iag iai iao iar iav iba ibb ibd ibg ibi ibo ibr ibv ida idb idd idg idi ido idr idv iga igb igd igg igi igo igr iia iib iid iii iio iir io- ioa iob iod iog ioi ioo ior iov ir- ira irb ird irg iri iro irr irv iva ivb ivd ivg ivi ivo ivr ivv o-i oaa oab oad oag oai oao oar oav ob- oba obb obd obg obi obo obr obv oda odb odd odg odi odo odr odv oga ogd ogg ogi ogo oia oib oid oii oio oir oiv oo- ooa oob ood oog ooi ooo oor oov or- ora orb ord org ori oro orr orv ov- ova ovb ovd ovi ovo ovv ra- raa rab rad rag rai rao rar rav rba rbb rbd rbg rbi rbo rbr rda rdb rdd rdg rdi rdo rdr rdv rga rgb rgd rgg rgi rgo rgr rgv ria rib rid rig rii rio rir riv roa rob rod rog roi roo ror rov rra rrb rrd rrg rri rrr rva rvb rvd rvg rvi rvo rvr rvv v-a vaa vab vad vag vai vao var vav vba vbd vbg vbi vbo vbr vbv vdb vdd vdg vdi vdo vdr vdv vga vgg vgo vgr vi- via vib vid vig vii vio vir viv voa vob vod vog voi voo vor vov vra vrb vrd vrg vri vrr vva vvb vvg vvi vvo vvr vvv