-th a-a a-b a-t aaa aab aad aae aag aah aan aat ab- aba abb abd abe abg abh abn abt ad- ada adb add ade adg adh adn adt aea aeb aed aee aeg aeh aen aet ag- aga agb agd age agg agh agn agt aha ahb ahd ahe ahg ahh ahn aht an- ana anb and ane ang anh ann ant at- ata atb atd ate atg ath atn att baa bab bad bae bag bah ban bat bba bbb bbd bbe bbg bbh bbn bbt bda bdb bdd bde bdg bdh bdt be- bea beb bed bee beg beh ben bet bga bgb bgd bge bgg bgh bgn bgt bha bhb bhd bhe bhg bhh bht bna bnb bnd bne bng bnn bnt bta btb btd bte btg bth btn btt daa dab dad dae dag dah dan dat dba dbb dbd dbe dbg dbh dbn dbt dda ddb ddd dde ddg ddh ddn ddt de- dea deb ded dee deg deh den det dga dgd dge dgg dgh dgn dgt dh- dha dhb dhd dhe dhh dht dna dnb dnd dne dng dnh dnn dnt dta dtb dtd dte dtg dth dtn dtt eaa eab ead eae eag eah ean eat eba ebb ebd ebe ebg ebh ebn ebt ed- eda edb edd ede edg edh edn edt eea eeb eed eee eeg een eet ega egb egd ege egg egh egn egt eha ehb ehd ehe ehg ehh ehn eht en- ena enb end ene eng enh enn ent eta etb etd ete etg eth etn ett g-d gaa gab gad gae gag gah gan gat gba gbd gbe gbg gbh gbn gbt gda gdb gdd gde gdh gdn gdt ge- gea geb ged gee geg geh gen get gga ggb ggd ggg ggh ggn ggt gha ghb ghd ghe ghg ghh ghn ght gna gnb gnd gne gnn gnt gta gtb gtd gte gtg gth gtn gtt haa hab had hae hag hah han hat hba hbb hbd hbe hbg hbh hbn hbt hda hdb hdd hde hdg hdh hdn hdt he- hea heb hed hee heg heh hen het hga hgb hge hgg hgh hgn hgt hha hhb hhd hhe hhg hhh hhn hht hna hnb hnd hne hng hnh hnn hnt hta htb htd hte htg hth htn htt naa nab nad nae nag nah nan nat nba nbb nbd nbe nbg nbn nbt nda ndb ndd nde ndg ndh ndn ndt ne- nea neb ned nee neg neh nen net nga ngb ngd nge ngg ngh ngn ngt nha nhb nhd nhe nhg nhh nhn nht nna nnb nne nng nnh nnn nnt nta ntb ntd nte ntg nth ntn ntt taa tab tad tae tag tah tan tat tba tbb tbd tbe tbg tbh tbn tbt tda tdb tdd tde tdg tdh tdn tdt te- tea teb ted tee teg teh ten tet tga tgb tge tgg tgh tgn tgt th- tha thb thd the thg thh thn tht tna tnb tnd tne tng tnh tnn tnt tta ttb ttd tte ttg tth ttn ttt