a-a a-b a-i aaa aab aad aai aam aan aar aax ab- aba abb abd abi abm abn abr abx ad- ada adb add adi adm adn adr adx ai- aia aib aid aii aim ain air aix ama amb amd ami amm amn amr amx an- ana anb and ani anm ann anr anx ar- ara arb ard ari arm arn arr arx ax- axa axi axm axn axr axx baa bab bad bai bam ban bar bax bba bbb bbd bbi bbm bbn bbr bbx bda bdb bdd bdi bdm bdr bdx bi- bia bib bid bii bim bin bir bix bma bmb bmd bmi bmm bmn bmr bmx bna bnb bnd bni bnn bnr bnx bra brb brd bri brm brn brr brx bxb bxd bxi bxm bxn bxx daa dab dad dai dam dan dar dax dba dbb dbd dbi dbm dbn dbr dbx dda ddb ddd ddi ddm ddn ddr ddx di- dia dib did dii dim din dir dix dma dmb dmd dmi dmm dmn dmr dmx dna dnb dnd dni dnm dnn dnr dra drb drd dri drm drn drr drx dxd dxi dxn dxr dxx i-d ia- iaa iab iad iai iam ian iar iba ibb ibd ibi ibm ibn ibr ibx ida idb idd idi idm idn idr idx iia iib iid iii iim iin iir iix im- ima imb imd imi imm imn imx in- ina inb ind ini inm inn inr inx ir- ira irb ird iri irm irn irr irx ixi ixn m-r maa mab mad mai mam man mar max mba mbb mbd mbi mbm mbr mbx mda mdb mdd mdi mdm mdn mdr mdx mi- mia mib mid mii mim min mir mix mma mmb mmd mmi mmm mmn mmr mmx mna mnb mni mnm mnn mnr mra mrb mrd mri mrm mrn mrr mrx mxa mxd mxi mxn mxr n-i naa nab nad nai nam nan nar nax nba nbb nbd nbi nbm nbn nbr nbx nda ndb ndd ndi ndm ndn ndr nia nib nid nii nim nin nir nix nma nmb nmd nmi nmm nmn nmr nna nnb nni nnm nnn nra nrb nrd nri nrm nrn nrr nrx nxd ra- raa rab rad rai ram ran rar rax rba rbb rbd rbi rbm rbn rbr rbx rda rdb rdd rdi rdm rdn rdr rdx ria rib rid rii rim rin rir rix rma rmb rmd rmi rmm rmn rmr rmx rna rnb rnd rni rnm rnn rnr rra rrb rrd rri rrm rrn rrr rxr xaa xad xam xan xar xbr xbx xda xdb xdi xdm xdr xia xii xin xix xma xmd xmi xmm xmr xmx xna xrd xrx xxi xxx