-er -th a-a a-b a-t aaa aab aae aag aah aan aar aat ab- aba abb abe abg abh abn abr abt aea aeb aee aeg aeh aen aer aet ag- aga agb age agg agh agn agr agt aha ahb ahe ahg ahh ahn ahr aht an- ana anb ane ang anh ann anr ant ar- ara arb are arg arh arn arr art at- ata atb ate atg ath atn atr att baa bab bae bag bah ban bar bat bba bbb bbe bbg bbh bbn bbr bbt be- bea beb bee beg beh ben ber bet bga bgb bge bgg bgh bgn bgr bgt bha bhb bhe bhg bhh bhr bht bna bnb bne bng bnn bnr bnt bra brb bre brg brh brn brr brt bta btb bte btg bth btn btr btt eaa eab eae eag eah ean ear eat eba ebb ebe ebg ebh ebn ebr ebt eea eeb eee eeg een eer eet ega egb ege egg egh egn egr egt eha ehb ehe ehg ehh ehn ehr eht en- ena enb ene eng enh enn enr ent era erb ere erg erh ern err ert eta etb ete etg eth etn etr ett gaa gab gae gag gah gan gar gat gba gbe gbg gbh gbn gbr gbt ge- gea geb gee geg geh gen ger get gga ggb ggg ggh ggn ggr ggt gha ghb ghe ghg ghh ghn ghr ght gna gnb gne gnn gnr gnt gra grb gre grg grh grn grr grt gta gtb gte gtg gth gtn gtr gtt haa hab hae hag hah han har hat hba hbb hbe hbg hbh hbn hbr hbt he- hea heb hee heg heh hen her het hga hgb hge hgg hgh hgn hgr hgt hha hhb hhe hhg hhh hhn hhr hht hna hnb hne hng hnh hnn hnt hr- hra hrb hre hrg hrh hrn hrr hrt hta htb hte htg hth htn htr htt naa nab nae nag nah nan nar nat nba nbb nbe nbg nbn nbr nbt ne- nea neb nee neg neh nen ner net nga ngb nge ngg ngh ngn ngt nha nhb nhe nhg nhh nhn nhr nht nna nnb nne nng nnh nnn nnt nra nrb nre nrg nrn nrr nrt nta ntb nte ntg nth ntn ntr ntt ra- raa rab rae rag rah ran rar rat rba rbb rbe rbg rbh rbn rbr rbt re- rea reb ree reg reh ren rer ret rga rgb rge rgg rgh rgn rgr rgt rh- rha rhb rhe rhg rhh rhn rhr rht rna rnb rng rnh rnn rnr rnt rra rrb rrg rrh rrn rrr rrt rta rtb rte rtg rtn rtr rtt taa tab tae tag tah tan tar tat tba tbb tbe tbg tbh tbn tbr tbt te- tea teb tee teg teh ten ter tet tga tgb tge tgg tgh tgn tgr tgt th- tha thb the thg thh thn thr tht tna tnb tne tng tnh tnn tnr tnt tra trb tre trg trh trn trr trt tta ttb tte ttg tth ttn ttr ttt