-er -th a-a a-b a-c a-t aaa aab aac aae aag aah aao aar aat aau ab- aba abb abc abe abg abh abo abr abt abu ac- aca acb acc ace acg ach aco acr act acu aea aeb aec aee aeg aeh aeo aer aet aeu ag- aga agb agc age agg agh ago agr agt agu aha ahb ahc ahe ahg ahh aho ahr aht ahu aoa aob aoc aoe aog aoh aoo aor aot aou ar- ara arb arc are arg arh aro arr art aru at- ata atb atc ate atg ath ato atr att atu au- aua aub auc aue aug auh auo aur aut b-u baa bab bac bae bag bah bao bar bat bau bba bbb bbc bbe bbg bbh bbo bbr bbt bbu bca bcb bcc bce bcg bch bco bcr bct bcu be- bea beb bec bee beg beh beo ber bet beu bga bgb bgc bge bgg bgh bgo bgr bgt bgu bha bhb bhc bhe bhg bhh bho bhr bht bhu boa bob boc boe bog boh boo bor bot bou bra brb bre brg brh bro brr brt bru bta btb btc bte btg bth bto btr btt btu bua bub buc bue bug buh buo bur but buu c-- caa cab cac cae cag cah cao car cat cau cba cbb cbc cbe cbg cbh cbo cbr cbt cbu cca ccb ccc cce ccg cch cco ccr cct ccu ce- cea ceb cec cee ceg ceh ceo cer cet ceu cga cgb cgc cge cgg cgh cgo cgr cgt cgu ch- cha chb chc che chg chh cho chr cht chu co- coa cob coc coe cog coh coo cor cot cou cra crb crc cre crg crh cro crr crt cru cta ctb ctc cte ctg cth cto ctr ctt ctu cua cub cuc cue cug cuh cuo cur cut cuu eaa eab eac eae eag eah eao ear eat eau eba ebb ebc ebe ebg ebh ebo ebr ebt ebu ec- eca ecb ecc ece ecg ech eco ecr ect ecu eea eeb eec eee eeg eeo eer eet ega egb egc ege egg egh ego egr egt egu eha ehb ehc ehe ehg ehh eho ehr eht ehu eo- eoa eob eoc eoe eog eoh eoo eor eot eou era erb erc ere erg erh ero err ert eru eta etb etc ete etg eth eto etr ett etu eu- eua eub euc eue eug eur eut gaa gab gac gae gag gah gao gar gat gau gba gbc gbe gbg gbh gbo gbr gbt gbu gca gcb gcc gce gcg gch gco gcr gct gcu ge- gea geb gec gee geg geh geo ger get geu gga ggb ggc ggg ggh ggo ggr ggt ggu gha ghb ghc ghe ghg ghh gho ghr ght goa gob goc goe gog goh goo gor got gou gra grb grc gre grg grh gro grr grt gru gta gtb gtc gte gtg gth gto gtr gtt gtu gu- gua gub guc gue gug guo gur gut guu haa hab hac hae hag hah hao har hat hau hba hbb hbc hbe hbg hbh hbo hbr hbt hbu hca hcb hcc hce hcg hch hco hcr hct he- hea heb hec hee heg heh heo her het heu hga hgb hgc hge hgg hgh hgo hgr hgt hgu hha hhb hhc hhe hhg hhh hho hhr hht hhu hoa hob hoc hoe hog hoh hoo hor hot hou hr- hra hrb hrc hre hrg hrh hro hrr hrt hru hta htb htc hte htg hth hto htr htt hua hub huc hue hug huh huo hur hut huu oaa oab oac oae oag oah oao oar oat oau ob- oba obb obc obe obg obh obo obr obt obu oc- oca ocb occ ocg och oco ocr oct ocu oea oeb oec oee oeg oeh oeo oer oet oga ogc oge ogg ogh ogo ogt oha ohc ohe ohg ohh oho ohr oht ohu oo- ooa oob ooc oog ooh ooo oor oot or- ora orb orc ore org orh oro orr ort oru ot- ota otb otc ote otg oth oto otr ott otu ou- oua ouc oue ouh ouo our out ra- raa rab rac rae rag rah rao rar rat rau rba rbb rbc rbe rbg rbh rbo rbr rbt rbu rca rcb rcc rce rcg rch rco rcr rct rcu re- rea reb rec ree reg reh reo rer ret reu rga rgb rgc rge rgg rgh rgo rgr rgt rh- rha rhb rhc rhe rhg rhh rho rhr rht rhu roa rob roc roe rog roh roo ror rot rou rra rrb rrc rrg rrh rrr rrt rru rta rtb rtc rte rtg rto rtr rtt rtu rua rub ruc rue rug ruh ruo rur rut ruu taa tab tac tae tag tah tao tar tat tau tba tbb tbc tbe tbg tbh tbo tbr tbt tbu tca tcb tcc tce tcg tch tco tcr tct tcu te- tea teb tec tee teg teh teo ter tet teu tga tgb tgc tge tgg tgh tgo tgr tgt tgu th- tha thb thc the thg thh tho thr tht thu to- toa tob toc toe tog toh too tor tot tou tra trb trc tre trg trh tro trr trt tru tta ttb ttc tte ttg tth tto ttr ttt ttu tua tub tuc tue tug tuh tuo tur tut tuu ua- uaa uab uac uae uag uah uao uar uat uau uba ubb ubc ube ubg ubh ubo ubr ubt ubu uca ucb ucc uce ucg uch uco ucr uct ucu uea ueb uec uee ueg ueh uer uet uga ugb ugc uge ugg ugh ugo ugr ugt ugu uha uhb uhc uhe uhh uho uhr uht uhu uoa uob uoc uoe uog uoo uor uot ur- ura urb urc ure urg uro urr urt uru uta utb utc ute uth uto utr utt utu uua uuc uue uug uur uut