a-a a-b a-i a-t aaa aab aad aai aak aan aao aar aat ab- aba abb abd abi abk abn abo abr abt ad- ada adb add adi adk adn ado adr adt ai- aia aib aid aii aik ain aio air ait aka akb akd aki akk akn ako akr an- ana anb and ani ank ann ano anr ant aoa aob aod aoi aok aon aoo aor aot ar- ara arb ard ari ark arn aro arr art at- ata atb atd ati atn ato atr att baa bab bad bai bak ban bao bar bat bba bbb bbd bbi bbk bbn bbo bbr bbt bda bdb bdd bdi bdk bdo bdr bdt bi- bia bib bid bii bik bin bio bir bit bka bkb bkk bkn bko bkr bkt bna bnb bnd bni bnk bnn bno bnr bnt boa bob bod boi bok bon boo bor bot bra brb brd bri brk brn bro brr brt bta btb btd bti btk btn bto btr btt daa dab dad dai dak dan dao dar dat dba dbb dbd dbi dbk dbn dbo dbr dbt dda ddb ddd ddi ddk ddn ddo ddr ddt di- dia dib did dii dik din dio dir dit dka dkb dki dkk dko dkr dkt dna dnb dnd dni dnk dnn dno dnr dnt doa dob dod doi dok don doo dor dot dra drb drd dri drk drn dro drr drt dta dtb dtd dti dtk dtn dto dtr dtt i-d ia- iaa iab iad iai ian iao iar iat iba ibb ibd ibi ibk ibn ibo ibr ibt ida idb idd idi idk idn ido idr idt iia iib iid iii iin iio iir iit ika ikb iki ikk iko ikr ikt in- ina inb ind ini ink inn ino inr int io- ioa iob iod ioi ion ioo ior iot ir- ira irb ird iri irk irn iro irr irt ita itb itd iti itk itn ito itt k-t ka- kaa kab kad kai kak kan kao kar kat kba kbb kbd kbi kbk kbn kbo kbr kda kdb kdk kdo kdr kdt kia kib kid kii kik kin kio kir kit kkb kki kkk kkn kkr kkt kn- kna knd kni knk knn kno knr knt koa kob kod koi kok kon koo kor kot kra krd kri krk krn kro krr krt kta ktb ktk ktn kto ktr ktt n-i naa nab nad nai nak nan nao nar nat nba nbb nbd nbi nbk nbn nbo nbr nbt nda ndb ndd ndi ndk ndn ndo ndr ndt nia nib nid nii nik nin nio nir nit nka nki nkk nkn nko nkr nkt nna nnb nni nnk nnn nno nnt no- noa nob nod noi nok non noo nor not nra nrb nrd nri nrk nrn nro nrr nrt nta ntb ntd nti ntk ntn nto ntr ntt o-i oaa oab oad oai oak oan oao oar oat ob- oba obb obd obi obk obn obo obr obt oda odb odd odi odn odo odr odt oia oib oid oii oik oin oio oir oit oka okb okd oki okk oko okr on- ona onb ond oni onk onn ono onr ont oo- ooa oob ood ooi ook oon ooo oor oot or- ora orb ord ori ork orn oro orr ort ot- ota otb otd oti otk otn oto otr ott ra- raa rab rad rai rak ran rao rar rat rba rbb rbd rbi rbk rbn rbo rbr rbt rda rdb rdd rdi rdn rdo rdr rdt ria rib rid rii rik rin rio rir rit rkb rkk rko rkt rna rnb rnd rni rnn rno rnr rnt roa rob rod roi rok ron roo ror rot rra rrb rrd rri rrk rrn rrr rrt rta rtb rtd rti rtk rtn rto rtr rtt taa tab tad tai tak tan tao tar tat tba tbb tbd tbi tbk tbn tbo tbr tbt tda tdb tdd tdi tdk tdn tdo tdr tdt tia tib tid tii tik tin tio tir tit tka tkb tkk tko tkr tkt tna tnb tnd tni tnk tnn tno tnr tnt to- toa tob tod toi tok ton too tor tot tra trb trd tri trk trn tro trr trt tta ttb ttd tti ttk ttn tto ttr ttt