-er a-a a-b a-i a-t aaa aab aae aai aak aam aan aar aat ab- aba abb abe abi abk abm abn abr abt aea aeb aee aei aek aem aen aer aet ai- aia aib aie aii aik aim ain air ait aka akb ake aki akk akm akn akr ama amb ame ami amk amm amn amr amt an- ana anb ane ani ank anm ann anr ant ar- ara arb are ari ark arm arn arr art at- ata atb ate ati atm atn atr att baa bab bae bai bak bam ban bar bat bba bbb bbe bbi bbk bbm bbn bbr bbt be- bea beb bee bei bek bem ben ber bet bi- bia bib bie bii bik bim bin bir bit bka bkb bke bkk bkm bkn bkr bkt bma bmb bme bmi bmk bmm bmn bmr bmt bna bnb bne bni bnk bnn bnr bnt bra brb bre bri brk brm brn brr brt bta btb bte bti btk btm btn btr btt eaa eab eae eai eak eam ean ear eat eba ebb ebe ebi ebk ebm ebn ebr ebt eea eeb eee eek eem een eer eet eia eib eie eii eik eim ein eir eit eka ekb eke eki ekr ekt em- ema emb eme emi emk emm emn emr emt en- ena enb ene eni enk enm enn enr ent era erb ere eri erk erm ern err ert eta etb ete eti etk etm etn etr ett ia- iaa iab iae iai iam ian iar iat iba ibb ibe ibi ibk ibm ibn ibr ibt ie- iea iee iei iek iem ien ier iet iia iib iie iii iim iin iir iit ika ikb ike iki ikk ikr ikt im- ima imb ime imi imm imn imt in- ina inb ine ini ink inm inn inr int ir- ira irb ire iri irk irm irn irr irt ita itb ite iti itk itm itn itt k-t ka- kaa kab kae kai kak kam kan kar kat kba kbb kbe kbi kbk kbm kbn kbr ke- kea keb kee kei kek kem ken ker ket kia kib kie kii kik kim kin kir kit kkb kke kki kkk kkm kkn kkr kkt kma kmb kme kmi kmk kmm kmt kn- kna kne kni knk knm knn knr knt kra kri krk krn krr krt kta ktb kte ktk ktm ktn ktr ktt m-r maa mab mae mai mak mam man mar mat mba mbb mbe mbi mbk mbm mbr mbt mea meb mee mei mek mem men mer met mi- mia mib mie mii mik mim min mir mit mka mkb mke mkk mkm mkn mkr mkt mma mmb mme mmi mmk mmm mmn mmr mmt mna mnb mne mni mnk mnm mnn mnr mnt mra mrb mre mri mrk mrm mrn mrr mrt mta mtb mte mti mtk mtm mtn mtr mtt n-i naa nab nae nai nak nam nan nar nat nba nbb nbe nbi nbk nbm nbn nbr nbt ne- nea neb nee nei nek nem nen ner net nia nib nie nii nik nim nin nir nit nka nke nki nkk nkm nkn nkr nkt nma nmb nme nmi nmk nmm nmn nmr nmt nna nnb nne nni nnk nnm nnn nnt nra nrb nre nri nrk nrm nrn nrr nrt nta ntb nte nti ntk ntm ntn ntr ntt ra- raa rab rae rai rak ram ran rar rat rba rbb rbe rbi rbk rbm rbn rbr rbt re- rea reb ree rei rek rem ren rer ret ria rib rie rii rik rim rin rir rit rkb rke rkk rkm rkt rma rmb rme rmi rmm rmn rmr rmt rna rnb rni rnm rnn rnr rnt rra rrb rri rrk rrm rrn rrr rrt rta rtb rte rti rtk rtm rtn rtr rtt taa tab tae tai tak tam tan tar tat tba tbb tbe tbi tbk tbm tbn tbr tbt te- tea teb tee tei tek tem ten ter tet tia tib tie tii tik tim tin tir tit tka tkb tke tkk tkm tkr tkt tma tmb tme tmi tmk tmm tmn tmr tmt tna tnb tne tni tnk tnm tnn tnr tnt tra trb tre tri trk trm trn trr trt tta ttb tte tti ttk ttm ttn ttr ttt