a-a a-b a-c a-t aaa aab aac aad aak aan aao aar aat aau ab- aba abb abc abd abk abn abo abr abt abu ac- aca acb acc acd ack acn aco acr act acu ad- ada adb adc add adk adn ado adr adt adu aka akb akc akd akk akn ako akr aku an- ana anb anc and ank ann ano anr ant anu aoa aob aoc aod aok aon aoo aor aot aou ar- ara arb arc ard ark arn aro arr art aru at- ata atb atc atd atn ato atr att atu au- aua aub auc aud auk aun auo aur aut b-u baa bab bac bad bak ban bao bar bat bau bba bbb bbc bbd bbk bbn bbo bbr bbt bbu bca bcb bcc bcd bck bcn bco bcr bct bcu bda bdb bdc bdd bdk bdo bdr bdt bdu bka bkb bkc bkk bkn bko bkr bkt bna bnb bnc bnd bnk bnn bno bnr bnt bnu boa bob boc bod bok bon boo bor bot bou bra brb brd brk brn bro brr brt bru bta btb btc btd btk btn bto btr btt btu bua bub buc bud buk bun buo bur but buu c-- caa cab cac cad cak can cao car cat cau cba cbb cbc cbd cbk cbn cbo cbr cbt cbu cca ccb ccc ccd cck ccn cco ccr cct ccu cda cdb cdc cdd cdk cdn cdo cdr cdt cdu cka ckb ckc ckd cko ckt cn- cna cnb cnc cnd cnn cno cnr cnt cnu co- coa cob coc cod cok con coo cor cot cou cra crb crc crd crk crn cro crr crt cru cta ctb ctc ctd ctk ctn cto ctr ctt ctu cua cub cuc cud cuk cun cuo cur cut cuu daa dab dac dad dak dan dao dar dat dau dba dbb dbc dbd dbk dbn dbo dbr dbt dbu dca dcb dcc dcd dck dcn dco dcr dct dcu dda ddb ddc ddd ddk ddn ddo ddr ddt ddu dka dkb dkc dkk dko dkr dkt dku dna dnb dnc dnd dnk dnn dno dnr dnt doa dob doc dod dok don doo dor dot dou dra drb drc drd drk drn dro drr drt dru dta dtb dtc dtd dtk dtn dto dtr dtt dtu dua dub duc dud duk dun duo dur dut k-t ka- kaa kab kac kad kak kan kao kar kat kau kba kbb kbc kbd kbk kbn kbo kbr kbu kca kcb kcc kcd kck kcn kcr kct kcu kda kdb kdc kdk kdo kdr kdt kdu kkb kkc kkk kkn kkr kkt kku kn- kna knc knd knk knn kno knr knt knu koa kob koc kod kok kon koo kor kot kou kra krc krd krk krn kro krr krt kru kta ktb ktc ktk ktn kto ktr ktt ktu kub kuc kud kuk kun kur kut kuu naa nab nac nad nak nan nao nar nat nau nba nbb nbc nbd nbk nbn nbo nbr nbt nbu nca ncb ncc ncd nck ncn nco ncr nct ncu nda ndb ndc ndd ndk ndn ndo ndr ndt ndu nka nkc nkk nkn nko nkr nkt nku nna nnb nnc nnk nnn nno nnt nnu no- noa nob noc nod nok non noo nor not nou nra nrb nrc nrd nrk nrn nro nrr nrt nru nta ntb ntc ntd ntk ntn nto ntr ntt ntu nua nub nuc nud nuk nun nuo nur nut nuu oaa oab oac oad oak oan oao oar oat oau ob- oba obb obc obd obk obn obo obr obt obu oc- oca ocb occ ocd ock ocn oco ocr oct ocu oda odb odc odd odn odo odr odt odu oka okb okc okd okk oko okr oku on- ona onb onc ond onk onn ono onr ont onu oo- ooa oob ooc ood ook oon ooo oor oot or- ora orb orc ord ork orn oro orr ort oru ot- ota otb otc otd otk otn oto otr ott otu ou- oua ouc oud ouk oun ouo our out ra- raa rab rac rad rak ran rao rar rat rau rba rbb rbc rbd rbk rbn rbo rbr rbt rbu rca rcb rcc rcd rcn rco rcr rct rcu rda rdb rdc rdd rdn rdo rdr rdt rdu rkb rkc rkk rko rkt rku rna rnb rnc rnd rnn rno rnr rnt rnu roa rob roc rod rok ron roo ror rot rou rra rrb rrc rrd rrk rrn rrr rrt rru rta rtb rtc rtd rtk rtn rto rtr rtt rtu rua rub ruc rud ruk run ruo rur rut ruu taa tab tac tad tak tan tao tar tat tau tba tbb tbc tbd tbk tbn tbo tbr tbt tbu tca tcb tcc tcd tck tcn tco tcr tct tcu tda tdb tdc tdd tdk tdn tdo tdr tdt tdu tka tkb tkc tkk tko tkr tkt tna tnb tnc tnd tnk tnn tno tnr tnt to- toa tob toc tod tok ton too tor tot tou tra trb trc trd trk trn tro trr trt tru tta ttb ttc ttd ttk ttn tto ttr ttt ttu tua tub tuc tud tuk tun tuo tur tut tuu ua- uaa uab uac uad uak uan uao uar uat uau uba ubb ubc ubk ubn ubo ubr ubt ubu uca ucb ucc ucd uck ucn uco ucr uct ucu uda udb udc udd udk udn udo udr udt udu uka ukb ukc ukk ukn ukr uku un- una unb unc und unk unn uno unr unt unu uoa uob uoc uod uok uon uoo uor uot ur- ura urb urc urd urk urn uro urr urt uru uta utb utc utd utk utn uto utr utt utu uua uuc uun uur uut uuu

-ana a-ak a-do a-ok a-un aaaa aaab aaac aaad aaan aaar aaba aabb aabc aabd aabt aaca aacb aacc aacd aack aacn aaco aacr aact aacu aada aadc