-th a-a a-b a-t aaa aab aah aak aan aao aar aat ab- aba abb abh abk abn abo abr abt aha ahb ahh ahk ahn aho ahr aht aka akb akh akk akn ako akr an- ana anb anh ank ann ano anr ant aoa aob aoh aok aon aoo aor aot ar- ara arb arh ark arn aro arr art at- ata atb ath atn ato atr att baa bab bah bak ban bao bar bat bba bbb bbh bbk bbn bbo bbr bbt bha bhb bhh bhk bho bhr bht bka bkb bkk bkn bko bkr bkt bna bnb bnk bnn bno bnr bnt boa bob boh bok bon boo bor bot bra brb brh brk brn bro brr brt bta btb bth btk btn bto btr btt haa hab hah hak han hao har hat hba hbb hbh hbk hbn hbo hbr hbt hha hhb hhh hhk hhn hho hhr hht hka hkb hkh hkk hkn hko hkr hkt hna hnb hnh hnk hnn hno hnt hoa hob hoh hok hon hoo hor hot hr- hra hrb hrh hrk hrn hro hrr hrt hta htb hth htk htn hto htr htt k-t ka- kaa kab kah kak kan kao kar kat kba kbb kbh kbk kbn kbo kbr kha khh khk khn kho khr kkb kkh kkk kkn kkr kkt kn- kna knk knn kno knr knt koa kob koh kok kon koo kor kot kra krk krn kro krr krt kta ktb kth ktk ktn kto ktr ktt naa nab nah nak nan nao nar nat nba nbb nbk nbn nbo nbr nbt nha nhb nhh nhk nhn nhr nht nka nkk nkn nko nkr nkt nna nnb nnh nnk nnn nno nnt no- noa nob noh nok non noo nor not nra nrb nrk nrn nro nrr nrt nta ntb nth ntk ntn nto ntr ntt oaa oab oah oak oan oao oar oat ob- oba obb obh obk obn obo obr obt oha ohh ohn oho ohr oht oka okb okk oko okr on- ona onb onh onk onn ono onr ont oo- ooa oob ooh ook oon ooo oor oot or- ora orb orh ork orn oro orr ort ot- ota otb oth otk otn oto otr ott ra- raa rab rah rak ran rao rar rat rba rbb rbh rbk rbn rbo rbr rbt rh- rha rhb rhh rhn rho rhr rht rkb rkk rko rkt rna rnb rnh rnn rno rnr rnt roa rob roh rok ron roo ror rot rra rrb rrh rrk rrn rrr rrt rta rtb rtk rtn rto rtr rtt taa tab tah tak tan tao tar tat tba tbb tbh tbk tbn tbo tbr tbt th- tha thb thh thk thn tho thr tht tka tkb tkk tko tkr tkt tna tnb tnh tnk tnn tno tnr tnt to- toa tob toh tok ton too tor tot tra trb trh trk trn tro trr trt tta ttb tth ttk ttn tto ttr ttt