-er -th a-a a-b a-t aaa aab aae aah aak aan aar aat ab- aba abb abe abh abk abn abr abt aea aeb aee aeh aek aen aer aet aha ahb ahe ahh ahk ahn ahr aht aka akb ake akh akk akn akr an- ana anb ane anh ank ann anr ant ar- ara arb are arh ark arn arr art at- ata atb ate ath atn atr att baa bab bae bah bak ban bar bat bba bbb bbe bbh bbk bbn bbr bbt be- bea beb bee beh bek ben ber bet bha bhb bhe bhh bhk bhr bht bka bkb bke bkk bkn bkr bkt bna bnb bne bnk bnn bnr bnt bra brb bre brh brk brn brr brt bta btb bte bth btk btn btr btt eaa eab eae eah eak ean ear eat eba ebb ebe ebh ebk ebn ebr ebt eea eeb eee eek een eer eet eha ehb ehe ehh ehn ehr eht eka ekb eke ekh ekr ekt en- ena enb ene enh enk enn enr ent era erb ere erh erk ern err ert eta etb ete eth etk etn etr ett haa hab hae hah hak han har hat hba hbb hbe hbh hbk hbn hbr hbt he- hea heb hee heh hek hen her het hha hhb hhe hhh hhk hhn hhr hht hka hkb hkh hkk hkn hkr hkt hna hnb hne hnh hnk hnn hnt hr- hra hrb hre hrh hrk hrn hrr hrt hta htb hte hth htk htn htr htt k-t ka- kaa kab kae kah kak kan kar kat kba kbb kbe kbh kbk kbn kbr ke- kea keb kee keh kek ken ker ket kha khe khh khk khn khr kkb kke kkh kkk kkn kkr kkt kn- kna kne knk knn knr knt kra krk krn krr krt kta ktb kte kth ktk ktn ktr ktt naa nab nae nah nak nan nar nat nba nbb nbe nbk nbn nbr nbt ne- nea neb nee neh nek nen ner net nha nhb nhe nhh nhk nhn nhr nht nka nke nkk nkn nkr nkt nna nnb nne nnh nnk nnn nnt nra nrb nre nrk nrn nrr nrt nta ntb nte nth ntk ntn ntr ntt ra- raa rab rae rah rak ran rar rat rba rbb rbe rbh rbk rbn rbr rbt re- rea reb ree reh rek ren rer ret rh- rha rhb rhe rhh rhn rhr rht rkb rke rkk rkt rna rnb rnh rnn rnr rnt rra rrb rrh rrk rrn rrr rrt rta rtb rte rtk rtn rtr rtt taa tab tae tah tak tan tar tat tba tbb tbe tbh tbk tbn tbr tbt te- tea teb tee teh tek ten ter tet th- tha thb the thh thk thn thr tht tka tkb tke tkk tkr tkt tna tnb tne tnh tnk tnn tnr tnt tra trb tre trh trk trn trr trt tta ttb tte tth ttk ttn ttr ttt