-er a-a a-b a-i a-t aaa aab aae aai aak aan aao aar aat aau ab- aba abb abe abi abk abn abo abr abt abu aea aeb aee aei aek aen aeo aer aet aeu ai- aia aib aie aii aik ain aio air ait aiu aka akb ake aki akk akn ako akr aku an- ana anb ane ani ank ann ano anr ant anu aoa aob aoe aoi aok aon aoo aor aot aou ar- ara arb are ari ark arn aro arr art aru at- ata atb ate ati atn ato atr att atu au- aua aub aue aui auk aun auo aur aut b-u baa bab bae bai bak ban bao bar bat bau bba bbb bbe bbi bbk bbn bbo bbr bbt bbu be- bea beb bee bei bek ben beo ber bet beu bi- bia bib bie bii bik bin bio bir bit biu bka bkb bke bkk bkn bko bkr bkt bna bnb bne bni bnk bnn bno bnr bnt bnu boa bob boe boi bok bon boo bor bot bou bra brb bre bri brk brn bro brr brt bru bta btb bte bti btk btn bto btr btt btu bua bub bue bui buk bun buo bur but buu eaa eab eae eai eak ean eao ear eat eau eba ebb ebe ebi ebk ebn ebo ebr ebt ebu eea eeb eee eek een eeo eer eet eia eib eie eii eik ein eio eir eit eiu eka ekb eke eki eko ekr ekt eku en- ena enb ene eni enk enn eno enr ent enu eo- eoa eob eoe eoi eok eon eoo eor eot eou era erb ere eri erk ern ero err ert eru eta etb ete eti etk etn eto etr ett etu eu- eua eub eue eui eun eur eut ia- iaa iab iae iai ian iao iar iat iau iba ibb ibe ibi ibk ibn ibo ibr ibt ibu ie- iea iee iei iek ien ier iet iia iib iie iii iin iio iir iit iiu ika ikb ike iki ikk iko ikr ikt iku in- ina inb ine ini ink inn ino inr int inu io- ioa iob ioe ioi ion ioo ior iot iou ir- ira irb ire iri irk irn iro irr irt iru ita itb ite iti itk itn ito itt itu iu- iua iub iue iui iur iut k-t ka- kaa kab kae kai kak kan kao kar kat kau kba kbb kbe kbi kbk kbn kbo kbr kbu ke- kea keb kee kei kek ken keo ker ket kia kib kie kii kik kin kio kir kit kiu kkb kke kki kkk kkn kkr kkt kku kn- kna kne kni knk knn kno knr knt knu koa kob koe koi kok kon koo kor kot kou kra kri krk krn kro krr krt kru kta ktb kte ktk ktn kto ktr ktt ktu kub kue kui kuk kun kur kut kuu n-i naa nab nae nai nak nan nao nar nat nau nba nbb nbe nbi nbk nbn nbo nbr nbt nbu ne- nea neb nee nei nek nen neo ner net neu nia nib nie nii nik nin nio nir nit niu nka nke nki nkk nkn nko nkr nkt nku nna nnb nne nni nnk nnn nno nnt nnu no- noa nob noe noi nok non noo nor not nou nra nrb nre nri nrk nrn nro nrr nrt nru nta ntb nte nti ntk ntn nto ntr ntt ntu nua nub nue nui nuk nun nuo nur nut nuu o-i oaa oab oae oai oak oan oao oar oat oau ob- oba obb obe obi obk obn obo obr obt obu oea oeb oee oei oen oeo oer oet oia oib oie oii oik oin oio oir oit oiu oka okb oke oki okk oko okr oku on- ona onb one oni onk onn ono onr ont onu oo- ooa oob ooi ook oon ooo oor oot or- ora orb ore ori ork orn oro orr ort oru ot- ota otb ote oti otk otn oto otr ott otu ou- oua oue oui ouk oun ouo our out ra- raa rab rae rai rak ran rao rar rat rau rba rbb rbe rbi rbk rbn rbo rbr rbt rbu re- rea reb ree rei rek ren reo rer ret reu ria rib rie rii rik rin rio rir rit rkb rke rkk rko rkt rku rna rnb rni rnn rno rnr rnt rnu roa rob roe roi rok ron roo ror rot rou rra rrb rri rrk rrn rrr rrt rru rta rtb rte rti rtk rtn rto rtr rtt rtu rua rub rue rui ruk run ruo rur rut ruu taa tab tae tai tak tan tao tar tat tau tba tbb tbe tbi tbk tbn tbo tbr tbt tbu te- tea teb tee tei tek ten teo ter tet teu tia tib tie tii tik tin tio tir tit tiu tka tkb tke tkk tko tkr tkt tna tnb tne tni tnk tnn tno tnr tnt to- toa tob toe toi tok ton too tor tot tou tra trb tre tri trk trn tro trr trt tru tta ttb tte tti ttk ttn tto ttr ttt ttu tua tub tue tui tuk tun tuo tur tut tuu ua- uaa uab uae uai uak uan uao uar uat uau uba ubb ube ubi ubk ubn ubo ubr ubt ubu uea ueb uee uei uen uer uet uia uib uie uii uin uio uir uit uiu uka ukb uke uki ukk ukn ukr uku un- una unb une uni unk unn uno unr unt unu uoa uob uoe uok uon uoo uor uot ur- ura urb ure uri urk urn uro urr urt uru uta utb ute uti utk utn uto utr utt utu uua uue uun uur uut uuu