-er -th a-a a-b a-c a-t aaa aab aac aae aah aan aar aat ab- aba abb abc abe abh abn abr abt ac- aca acb acc ace ach acn acr act aea aeb aec aee aeh aen aer aet aha ahb ahc ahe ahh ahn ahr aht an- ana anb anc ane anh ann anr ant ar- ara arb arc are arh arn arr art at- ata atb atc ate ath atn atr att baa bab bac bae bah ban bar bat bba bbb bbc bbe bbh bbn bbr bbt bca bcb bcc bce bch bcn bcr bct be- bea beb bec bee beh ben ber bet bha bhb bhc bhe bhh bhr bht bna bnb bnc bne bnn bnr bnt bra brb bre brh brn brr brt bta btb btc bte bth btn btr btt c-- caa cab cac cae cah can car cat cba cbb cbc cbe cbh cbn cbr cbt cca ccb ccc cce cch ccn ccr cct ce- cea ceb cec cee ceh cen cer cet ch- cha chb chc che chh chn chr cht cn- cna cnb cnc cne cnh cnn cnr cnt cra crb crc cre crh crn crr crt cta ctb ctc cte cth ctn ctr ctt eaa eab eac eae eah ean ear eat eba ebb ebc ebe ebh ebn ebr ebt ec- eca ecb ecc ece ech ecn ecr ect eea eeb eec eee een eer eet eha ehb ehc ehe ehh ehn ehr eht en- ena enb enc ene enh enn enr ent era erb erc ere erh ern err ert eta etb etc ete eth etn etr ett haa hab hac hae hah han har hat hba hbb hbc hbe hbh hbn hbr hbt hca hcb hcc hce hch hcn hcr hct he- hea heb hec hee heh hen her het hha hhb hhc hhe hhh hhn hhr hht hna hnb hnc hne hnh hnn hnt hr- hra hrb hrc hre hrh hrn hrr hrt hta htb htc hte hth htn htr htt naa nab nac nae nah nan nar nat nba nbb nbc nbe nbn nbr nbt nca ncb ncc nce nch ncn ncr nct ne- nea neb nec nee neh nen ner net nha nhb nhc nhe nhh nhn nhr nht nna nnb nnc nne nnh nnn nnt nra nrb nrc nre nrn nrr nrt nta ntb ntc nte nth ntn ntr ntt ra- raa rab rac rae rah ran rar rat rba rbb rbc rbe rbh rbn rbr rbt rca rcb rcc rce rch rcn rcr rct re- rea reb rec ree reh ren rer ret rh- rha rhb rhc rhe rhh rhn rhr rht rna rnb rnc rnh rnn rnr rnt rra rrb rrc rrh rrn rrr rrt rta rtb rtc rte rtn rtr rtt taa tab tac tae tah tan tar tat tba tbb tbc tbe tbh tbn tbr tbt tca tcb tcc tce tch tcn tcr tct te- tea teb tec tee teh ten ter tet th- tha thb thc the thh thn thr tht tna tnb tnc tne tnh tnn tnr tnt tra trb trc tre trh trn trr trt tta ttb ttc tte tth ttn ttr ttt