a-a a-b a-i a-t aaa aab aad aag aai aan aar aat ab- aba abb abd abg abi abn abr abt ad- ada adb add adg adi adn adr adt ag- aga agb agd agg agi agn agr agt ai- aia aib aid aig aii ain air ait an- ana anb and ang ani ann anr ant ar- ara arb ard arg ari arn arr art at- ata atb atd atg ati atn atr att baa bab bad bag bai ban bar bat bba bbb bbd bbg bbi bbn bbr bbt bda bdb bdd bdg bdi bdr bdt bga bgb bgd bgg bgi bgn bgr bgt bi- bia bib bid big bii bin bir bit bna bnb bnd bng bni bnn bnr bnt bra brb brd brg bri brn brr brt bta btb btd btg bti btn btr btt daa dab dad dag dai dan dar dat dba dbb dbd dbg dbi dbn dbr dbt dda ddb ddd ddg ddi ddn ddr ddt dga dgd dgg dgi dgn dgr dgt di- dia dib did dig dii din dir dit dna dnb dnd dng dni dnn dnr dnt dra drb drd drg dri drn drr drt dta dtb dtd dtg dti dtn dtr dtt g-d gaa gab gad gag gai gan gar gat gba gbd gbg gbi gbn gbr gbt gda gdb gdd gdi gdn gdr gdt gga ggb ggd ggg ggi ggn ggr ggt gia gib gid gig gii gin gir git gna gnb gnd gni gnn gnr gnt gra grb grd grg gri grn grr grt gta gtb gtd gtg gti gtn gtr gtt i-d ia- iaa iab iad iag iai ian iar iat iba ibb ibd ibg ibi ibn ibr ibt ida idb idd idg idi idn idr idt iga igb igd igg igi ign igr igt iia iib iid iii iin iir iit in- ina inb ind ing ini inn inr int ir- ira irb ird irg iri irn irr irt ita itb itd itg iti itn itt n-i naa nab nad nag nai nan nar nat nba nbb nbd nbg nbi nbn nbr nbt nda ndb ndd ndg ndi ndn ndr ndt nga ngb ngd ngg ngi ngn ngt nia nib nid nig nii nin nir nit nna nnb nng nni nnn nnt nra nrb nrd nrg nri nrn nrr nrt nta ntb ntd ntg nti ntn ntr ntt ra- raa rab rad rag rai ran rar rat rba rbb rbd rbg rbi rbn rbr rbt rda rdb rdd rdg rdi rdn rdr rdt rga rgb rgd rgg rgi rgn rgr rgt ria rib rid rig rii rin rir rit rna rnb rnd rng rni rnn rnr rnt rra rrb rrd rrg rri rrn rrr rrt rta rtb rtd rtg rti rtn rtr rtt taa tab tad tag tai tan tar tat tba tbb tbd tbg tbi tbn tbr tbt tda tdb tdd tdg tdi tdn tdr tdt tga tgb tgg tgi tgn tgr tgt tia tib tid tig tii tin tir tit tna tnb tnd tng tni tnn tnr tnt tra trb trd trg tri trn trr trt tta ttb ttd ttg tti ttn ttr ttt