-er -th a-a a-b a-t aaa aab aae aag aah aak aar aat ab- aba abb abe abg abh abk abr abt aea aeb aee aeg aeh aek aer aet ag- aga agb age agg agh agk agr agt aha ahb ahe ahg ahh ahk ahr aht aka akb ake akg akh akk akr ar- ara arb are arg arh ark arr art at- ata atb ate atg ath atr att baa bab bae bag bah bak bar bat bba bbb bbe bbg bbh bbk bbr bbt be- bea beb bee beg beh bek ber bet bga bgb bge bgg bgh bgk bgr bgt bha bhb bhe bhg bhh bhk bhr bht bka bkb bke bkg bkk bkr bkt bra brb bre brg brh brk brr brt bta btb bte btg bth btk btr btt eaa eab eae eag eah eak ear eat eba ebb ebe ebg ebh ebk ebr ebt eea eeb eee eeg eek eer eet ega egb ege egg egh egr egt eha ehb ehe ehg ehh ehr eht eka ekb eke ekg ekh ekr ekt era erb ere erg erh erk err ert eta etb ete etg eth etk etr ett gaa gab gae gag gah gak gar gat gba gbe gbg gbh gbk gbr gbt ge- gea geb gee geg geh gek ger get gga ggb ggg ggh ggr ggt gha ghb ghe ghg ghh ghr ght gka gkb gkh gkt gra grb gre grg grh grk grr grt gta gtb gte gtg gth gtk gtr gtt haa hab hae hag hah hak har hat hba hbb hbe hbg hbh hbk hbr hbt he- hea heb hee heg heh hek her het hga hgb hge hgg hgh hgk hgr hgt hha hhb hhe hhg hhh hhk hhr hht hka hkb hkg hkh hkk hkr hkt hr- hra hrb hre hrg hrh hrk hrr hrt hta htb hte htg hth htk htr htt k-t ka- kaa kab kae kag kah kak kar kat kba kbb kbe kbh kbk kbr ke- kea keb kee keg keh kek ker ket kga kgb kgh kha khe khh khk khr kkb kke kkh kkk kkr kkt kra krg krk krr krt kta ktb kte ktg kth ktk ktr ktt ra- raa rab rae rag rah rak rar rat rba rbb rbe rbg rbh rbk rbr rbt re- rea reb ree reg reh rek rer ret rga rgb rge rgg rgh rgk rgr rgt rh- rha rhb rhe rhg rhh rhr rht rkb rke rkg rkk rkt rra rrb rrg rrh rrk rrr rrt rta rtb rte rtg rtk rtr rtt taa tab tae tag tah tak tar tat tba tbb tbe tbg tbh tbk tbr tbt te- tea teb tee teg teh tek ter tet tga tgb tge tgg tgh tgk tgr tgt th- tha thb the thg thh thk thr tht tka tkb tke tkg tkk tkr tkt tra trb tre trg trh trk trr trt tta ttb tte ttg tth ttk ttr ttt