a-a a-i aaa aaf aag aai aao aar aau aav af- afa aff afg afi afo afr afu afv ag- aga agf agg agi ago agr agu agv ai- aia aif aig aii aio air aiu aiv aoa aof aog aoi aoo aor aou aov ar- ara arf arg ari aro arr aru arv au- aua auf aug aui auo aur auv av- ava avf avg avi avo avr avu faa faf fag fai fao far fau fav ffa fff ffg ffi ffo ffr ffu ffv fga fgf fgg fgi fgr fgv fia fif fig fii fir fiu foa fof fog foi foo for fou fra frf frg fri fro frr fru fua fuf fug fui fuo fur fuu fuv fva fvg gaa gaf gag gai gao gar gau gav gfa gff gfi gfo gfr gga ggg ggi ggo ggr ggu ggv gia gif gig gii gio gir giu giv goa gof gog goi goo gor gou gov gra grf grg gri gro grr gru grv gu- gua guf gug gui guo gur guu guv gva gvf gvg gvi gvo gvr gvu i-f i-v ia- iaa iaf iag iai iao iar iau iav ifa iff ifg ifi ifo ifr ifu iga igf igg igi igo igr igu iia iif iii iio iir iiu io- ioa iof iog ioi ioo ior iou iov ir- ira irf irg iri iro irr iru irv iu- iua iug iui iur iva ivf ivg ivi ivo ivr ivu ivv o-i oaa oaf oag oai oao oar oau oav of- ofa off ofg ofi ofo ofr ofu ofv oga ogf ogg ogi ogo oia oif oii oio oir oiu oiv oo- ooa oof oog ooi ooo oor oov or- ora orf org ori oro orr oru orv ou- oua ouf oui ouo our ov- ova ovf ovi ovo ovv ra- raa raf rag rai rao rar rau rav rfa rff rfg rfi rfo rfr rfu rfv rga rgf rgg rgi rgo rgr rgv ria rif rig rii rio rir riv roa rof rog roi roo ror rou rov rra rrf rrg rri rrr rru rua ruf rug rui ruo rur ruu ruv rva rvf rvg rvi rvo rvr rvu rvv ua- uaa uaf uag uai uao uar uau uav ufa uff ufg ufi ufo ufr ufu ufv uga ugf ugg ugi ugo ugr ugu uia uif uig uii uio uir uiu uoa uog uoo uor ur- ura urf urg uri uro urr uru uua uug uur uuu uva uvf uvo uvu uvv v-a vaa vag vai vao var vau vav vfa vff vfg vfi vfr vfu vfv vga vgf vgg vgo vgr vgu vi- via vif vig vii vio vir viu viv voa vof vog voi voo vor vou vov vra vrf vrg vri vrr vru vug vur vuv vva vvg vvi vvo vvr vvv