a-a a-b a-i aaa aab aad aaf aag aai aan aau ab- aba abb abd abf abg abi abn abu ad- ada adb add adf adg adi adn adu af- afa afb afd aff afg afi afn afu ag- aga agb agd agf agg agi agn agu ai- aia aib aid aif aig aii ain aiu an- ana anb and anf ang ani ann anu au- aua aub aud auf aug aui aun b-u baa bab bad baf bag bai ban bau bba bbb bbd bbf bbg bbi bbn bbu bda bdb bdd bdf bdg bdi bdu bfa bfb bfd bff bfg bfi bfn bfu bga bgb bgd bgf bgg bgi bgn bgu bi- bia bib bid bif big bii bin biu bna bnb bnd bnf bng bni bnn bnu bua bub bud buf bug bui bun buu daa dab dad daf dag dai dan dau dba dbb dbd dbf dbg dbi dbn dbu dda ddb ddd ddf ddg ddi ddn ddu dfa dfb dfd dff dfg dfi dfn dfu dga dgd dgf dgg dgi dgn dgu di- dia dib did dif dig dii din diu dna dnb dnd dnf dng dni dnn dua dub dud duf dug dui dun faa fab fad faf fag fai fan fau fba fbb fbd fbf fbg fbi fbn fbu fda fdb fdd fdf fdg fdi fdn fdu ffa ffd fff ffg ffi ffn ffu fga fgb fgd fgf fgg fgi fgn fia fib fid fif fig fii fin fiu fna fnb fnd fnf fng fni fnn fnu fua fub fud fuf fug fui fun fuu g-d gaa gab gad gaf gag gai gan gau gba gbd gbf gbg gbi gbn gbu gda gdb gdd gdf gdi gdn gdu gfa gfb gfd gff gfi gga ggb ggd ggg ggi ggn ggu gia gib gid gif gig gii gin giu gna gnb gnd gnf gni gnn gnu gu- gua gub gud guf gug gui gun guu i-d i-f ia- iaa iab iad iaf iag iai ian iau iba ibb ibd ibf ibg ibi ibn ibu ida idb idd idf idg idi idn idu ifa ifb ifd iff ifg ifi ifn ifu iga igb igd igf igg igi ign igu iia iib iid iif iii iin iiu in- ina inb ind inf ing ini inn inu iu- iua iub iud iug iui n-i naa nab nad naf nag nai nan nau nba nbb nbd nbf nbg nbi nbn nbu nda ndb ndd ndf ndg ndi ndn ndu nfa nfb nfd nff nfi nfn nfu nga ngb ngd ngf ngg ngi ngn ngu nia nib nid nif nig nii nin niu nna nnb nnf nng nni nnn nnu nua nub nud nug nui nun nuu ua- uaa uab uad uaf uag uai uan uau uba ubb ubf ubg ubi ubn ubu uda udb udd udf udg udi udn udu ufa ufd uff ufg ufi ufn ufu uga ugb ugf ugg ugi ugn ugu uia uib uid uif uig uii uin uiu un- una unb und unf ung uni unn unu uua uug uun uuu