a-a a-b a-i aaa aab aad aaf aag aai aan aao aar aau ab- aba abb abd abf abg abi abn abo abr abu ad- ada adb add adf adg adi adn ado adr adu af- afa afb afd aff afg afi afn afo afr afu ag- aga agb agd agf agg agi agn ago agr agu ai- aia aib aid aif aig aii ain aio air aiu an- ana anb and anf ang ani ann ano anr anu aoa aob aod aof aog aoi aon aoo aor aou ar- ara arb ard arf arg ari arn aro arr aru au- aua aub aud auf aug aui aun auo aur b-u baa bab bad baf bag bai ban bao bar bau bba bbb bbd bbf bbg bbi bbn bbo bbr bbu bda bdb bdd bdf bdg bdi bdo bdr bdu bfa bfb bfd bff bfg bfi bfn bfo bfr bfu bga bgb bgd bgf bgg bgi bgn bgo bgr bgu bi- bia bib bid bif big bii bin bio bir biu bna bnb bnd bnf bng bni bnn bno bnr bnu boa bob bod bof bog boi bon boo bor bou bra brb brd brf brg bri brn bro brr bru bua bub bud buf bug bui bun buo bur buu daa dab dad daf dag dai dan dao dar dau dba dbb dbd dbf dbg dbi dbn dbo dbr dbu dda ddb ddd ddf ddg ddi ddn ddo ddr ddu dfa dfb dfd dff dfg dfi dfn dfo dfr dfu dga dgd dgf dgg dgi dgn dgr dgu di- dia dib did dif dig dii din dio dir diu dna dnb dnd dnf dng dni dnn dno dnr doa dob dod dof dog doi don doo dor dou dra drb drd drg dri drn dro drr dru dua dub dud duf dug dui dun duo dur faa fab fad faf fag fai fan fao far fau fba fbb fbd fbf fbg fbi fbn fbo fbr fbu fda fdb fdd fdf fdg fdi fdn fdo fdr fdu ffa ffd fff ffg ffi ffn ffo ffr ffu fga fgb fgd fgf fgg fgi fgn fgr fia fib fid fif fig fii fin fir fiu fna fnb fnd fnf fng fni fnn fnr fnu foa fob fof fog foi fon foo for fou fra frb frd frf frg fri frn fro frr fru fua fub fud fuf fug fui fun fuo fur fuu g-d gaa gab gad gaf gag gai gan gao gar gau gba gbd gbf gbg gbi gbn gbo gbr gbu gda gdb gdd gdf gdi gdn gdo gdr gdu gfa gfb gfd gff gfi gfo gfr gga ggb ggd ggg ggi ggn ggo ggr ggu gia gib gid gif gig gii gin gio gir giu gna gnb gnd gnf gni gnn gno gnr gnu goa gob god gof gog goi gon goo gor gou gra grb grd grf grg gri grn gro grr gru gu- gua gub gud guf gug gui gun guo gur guu i-d i-f ia- iaa iab iad iaf iag iai ian iao iar iau iba ibb ibd ibf ibg ibi ibn ibo ibr ibu ida idb idd idf idg idi idn ido idr idu ifa ifb ifd iff ifg ifi ifn ifo ifr ifu iga igb igd igf igg igi ign igo igr igu iia iib iid iif iii iin iio iir iiu in- ina inb ind inf ing ini inn ino inr inu io- ioa iob iod iof iog ioi ion ioo ior iou ir- ira irb ird irf irg iri irn iro irr iru iu- iua iub iud iug iui iur n-i naa nab nad naf nag nai nan nao nar nau nba nbb nbd nbf nbg nbi nbn nbo nbr nbu nda ndb ndd ndf ndg ndi ndn ndo ndr ndu nfa nfb nfd nff nfi nfn nfo nfr nfu nga ngb ngd ngf ngg ngi ngn ngo ngu nia nib nid nif nig nii nin nio nir niu nna nnb nnf nng nni nnn nno nnu no- noa nob nod nof nog noi non noo nor nou nra nrb nrd nrf nrg nri nrn nro nrr nru nua nub nud nug nui nun nuo nur nuu o-i oaa oab oad oaf oag oai oan oao oar oau ob- oba obb obd obf obg obi obn obo obr obu oda odb odd odf odg odi odn odo odr odu of- ofa ofb ofd off ofg ofi ofn ofo ofr ofu oga ogd ogf ogg ogi ogn ogo oia oib oid oif oii oin oio oir oiu on- ona onb ond onf ong oni onn ono onr onu oo- ooa oob ood oof oog ooi oon ooo oor or- ora orb ord orf org ori orn oro orr oru ou- oua oud ouf oui oun ouo our ra- raa rab rad raf rag rai ran rao rar rau rba rbb rbd rbf rbg rbi rbn rbo rbr rbu rda rdb rdd rdf rdg rdi rdn rdo rdr rdu rfa rfb rfd rff rfg rfi rfn rfo rfr rfu rga rgb rgd rgf rgg rgi rgn rgo rgr ria rib rid rif rig rii rin rio rir rna rnb rnd rng rni rnn rno rnr rnu roa rob rod rof rog roi ron roo ror rou rra rrb rrd rrf rrg rri rrn rrr rru rua rub rud ruf rug rui run ruo rur ruu ua- uaa uab uad uaf uag uai uan uao uar uau uba ubb ubf ubg ubi ubn ubo ubr ubu uda udb udd udf udg udi udn udo udr udu ufa ufd uff ufg ufi ufn ufo ufr ufu uga ugb ugf ugg ugi ugn ugo ugr ugu uia uib uid uif uig uii uin uio uir uiu un- una unb und unf ung uni unn uno unr unu uoa uob uod uog uon uoo uor ur- ura urb urd urf urg uri urn uro urr uru uua uug uun uur uuu