-er a-a a-b a-i aaa aab aae aag aai aan aao aar aau aav ab- aba abb abe abg abi abn abo abr abu abv aea aeb aee aeg aei aen aeo aer aeu aev ag- aga agb age agg agi agn ago agr agu agv ai- aia aib aie aig aii ain aio air aiu aiv an- ana anb ane ang ani ann ano anr anu anv aoa aob aoe aog aoi aon aoo aor aou aov ar- ara arb are arg ari arn aro arr aru arv au- aua aub aue aug aui aun auo aur auv av- ava avb ave avg avi avn avo avr avu b-u baa bab bae bag bai ban bao bar bau bav bba bbb bbe bbg bbi bbn bbo bbr bbu be- bea beb bee beg bei ben beo ber beu bev bga bgb bge bgg bgi bgn bgo bgr bgu bgv bi- bia bib bie big bii bin bio bir biu biv bna bnb bne bng bni bnn bno bnr bnu bnv boa bob boe bog boi bon boo bor bou bov bra brb bre brg bri brn bro brr bru brv bua bub bue bug bui bun buo bur buu bva bvb bve bvg bvi bvn bvo bvr bvu bvv eaa eab eae eag eai ean eao ear eau eav eba ebb ebe ebg ebi ebn ebo ebr ebu ebv eea eeb eee eeg een eeo eer eev ega egb ege egg egi egn ego egr egu eia eib eie eig eii ein eio eir eiu eiv en- ena enb ene eng eni enn eno enr enu env eo- eoa eob eoe eog eoi eon eoo eor eou era erb ere erg eri ern ero err eru erv eu- eua eub eue eug eui eun eur euv eva evb eve evg evi evn evo evr evv gaa gab gae gag gai gan gao gar gau gav gba gbe gbg gbi gbn gbo gbr gbu gbv ge- gea geb gee geg gei gen geo ger geu gev gga ggb ggg ggi ggn ggo ggr ggu ggv gia gib gie gig gii gin gio gir giu giv gna gnb gne gni gnn gno gnr gnu gnv goa gob goe gog goi gon goo gor gou gov gra grb gre grg gri grn gro grr gru grv gu- gua gub gue gug gui gun guo gur guu guv gva gvb gve gvg gvi gvn gvo gvr gvu i-v ia- iaa iab iae iag iai ian iao iar iau iav iba ibb ibe ibg ibi ibn ibo ibr ibu ibv ie- iea iee ieg iei ien ier iev iga igb ige igg igi ign igo igr igu iia iib iie iii iin iio iir iiu in- ina inb ine ing ini inn ino inr inu inv io- ioa iob ioe iog ioi ion ioo ior iou iov ir- ira irb ire irg iri irn iro irr iru irv iu- iua iub iue iug iui iur iva ivb ive ivg ivi ivo ivr ivu ivv n-i naa nab nae nag nai nan nao nar nau nav nba nbb nbe nbg nbi nbn nbo nbr nbu nbv ne- nea neb nee neg nei nen neo ner neu nev nga ngb nge ngg ngi ngn ngo ngu nia nib nie nig nii nin nio nir niu niv nna nnb nne nng nni nnn nno nnu nnv no- noa nob noe nog noi non noo nor nou nov nra nrb nre nrg nri nrn nro nrr nru nrv nua nub nue nug nui nun nuo nur nuu nuv nva nvb nve nvg nvi nvn nvu nvv o-i oaa oab oae oag oai oan oao oar oau oav ob- oba obb obe obg obi obn obo obr obu obv oea oeb oee oeg oei oen oeo oer oga oge ogg ogi ogn ogo oia oib oie oii oin oio oir oiu oiv on- ona onb one ong oni onn ono onr onu oo- ooa oob oog ooi oon ooo oor oov or- ora orb ore org ori orn oro orr oru orv ou- oua oue oui oun ouo our ov- ova ovb ove ovi ovo ovv ra- raa rab rae rag rai ran rao rar rau rav rba rbb rbe rbg rbi rbn rbo rbr rbu re- rea reb ree reg rei ren reo rer reu rev rga rgb rge rgg rgi rgn rgo rgr rgv ria rib rie rig rii rin rio rir riv rna rnb rng rni rnn rno rnr rnu rnv roa rob roe rog roi ron roo ror rou rov rra rrb rrg rri rrn rrr rru rua rub rue rug rui run ruo rur ruu ruv rva rvb rve rvg rvi rvn rvo rvr rvu rvv ua- uaa uab uae uag uai uan uao uar uau uav uba ubb ube ubg ubi ubn ubo ubr ubu ubv uea ueb uee ueg uei uen uer uga ugb uge ugg ugi ugn ugo ugr ugu uia uib uie uig uii uin uio uir uiu un- una unb une ung uni unn uno unr unu unv uoa uob uoe uog uon uoo uor ur- ura urb ure urg uri urn uro urr uru uua uue uug uun uur uuu uva uvb uve uvo uvu uvv v-a v-e vaa vab vae vag vai van vao var vau vav vba vbg vbi vbo vbr vbv vea veb vee veg vei ven veo ver veu vga vgg vgn vgo vgr vgu vi- via vib vie vig vii vin vio vir viu viv vn- vna vng vni vno vnr vnu vnv voa vob voe vog voi von voo vor vou vov vra vrb vre vrg vri vrn vrr vru vue vug vur vuv vva vvb vvg vvi vvo vvr vvv