-er -th a-a a-b a-t aaa aab aae aah aak aar aat ab- aba abb abe abh abk abr abt aea aeb aee aeh aek aer aet aha ahb ahe ahh ahk ahr aht aka akb ake akh akk akr ar- ara arb are arh ark arr art at- ata atb ate ath atr att baa bab bae bah bak bar bat bba bbb bbe bbh bbk bbr bbt be- bea beb bee beh bek ber bet bha bhb bhe bhh bhk bhr bht bka bkb bke bkk bkr bkt bra brb bre brh brk brr brt bta btb bte bth btk btr btt eaa eab eae eah eak ear eat eba ebb ebe ebh ebk ebr ebt eea eeb eee eek eer eet eha ehb ehe ehh ehr eht eka ekb eke ekh ekr ekt era erb ere erh erk err ert eta etb ete eth etk etr ett haa hab hae hah hak har hat hba hbb hbe hbh hbk hbr hbt he- hea heb hee heh hek her het hha hhb hhe hhh hhk hhr hht hka hkb hkh hkk hkr hkt hr- hra hrb hre hrh hrk hrr hrt hta htb hte hth htk htr htt k-t ka- kaa kab kae kah kak kar kat kba kbb kbe kbh kbk kbr ke- kea keb kee keh kek ker ket kha khe khh khk khr kkb kke kkh kkk kkr kkt kra krk krr krt kta ktb kte kth ktk ktr ktt ra- raa rab rae rah rak rar rat rba rbb rbe rbh rbk rbr rbt re- rea reb ree reh rek rer ret rh- rha rhb rhe rhh rhr rht rkb rke rkk rkt rra rrb rrh rrk rrr rrt rta rtb rte rtk rtr rtt taa tab tae tah tak tar tat tba tbb tbe tbh tbk tbr tbt te- tea teb tee teh tek ter tet th- tha thb the thh thk thr tht tka tkb tke tkk tkr tkt tra trb tre trh trk trr trt tta ttb tte tth ttk ttr ttt