a-a a-b a-i aaa aab aad aai aam aar aas aax ab- aba abb abd abi abm abr abs abx ad- ada adb add adi adm adr ads adx ai- aia aib aid aii aim air ais aix ama amb amd ami amm amr ams amx ar- ara arb ard ari arm arr ars arx as- asa asb asd asi asm asr ass asx ax- axa axi axm axr axs axx baa bab bad bai bam bar bas bax bba bbb bbd bbi bbm bbr bbs bbx bda bdb bdd bdi bdm bdr bds bdx bi- bia bib bid bii bim bir bis bix bma bmb bmd bmi bmm bmr bms bmx bra brb brd bri brm brr brs brx bsa bsb bsd bsi bsm bsr bss bsx bxb bxd bxi bxm bxx daa dab dad dai dam dar das dax dba dbb dbd dbi dbm dbr dbs dbx dda ddb ddd ddi ddm ddr dds ddx di- dia dib did dii dim dir dis dix dma dmb dmd dmi dmm dmr dms dmx dra drb drd dri drm drr drs drx dsa dsb dsd dsi dsm dsr dss dsx dxd dxi dxr dxs dxx i-d ia- iaa iab iad iai iam iar ias iba ibb ibd ibi ibm ibr ibs ibx ida idb idd idi idm idr ids idx iia iib iid iii iim iir iis iix im- ima imb imd imi imm ims imx ir- ira irb ird iri irm irr irs irx is- isa isb isd isi ism isr iss ixi m-r maa mab mad mai mam mar mas max mba mbb mbd mbi mbm mbr mbs mbx mda mdb mdd mdi mdm mdr mds mdx mi- mia mib mid mii mim mir mis mix mma mmb mmd mmi mmm mmr mms mmx mra mrb mrd mri mrm mrr mrs mrx msa msb msd msi msm msr mss msx mxa mxd mxi mxr mxs ra- raa rab rad rai ram rar ras rax rba rbb rbd rbi rbm rbr rbs rbx rda rdb rdd rdi rdm rdr rds rdx ria rib rid rii rim rir ris rix rma rmb rmd rmi rmm rmr rms rmx rra rrb rrd rri rrm rrr rrs rsa rsb rsd rsi rsm rsr rss rsx rxr rxs saa sab sad sai sam sar sas sax sba sbb sbd sbi sbm sbr sbs sbx sda sdb sdd sdi sdm sdr sds sia sib sid sii sim sir sis six sma smb smd smi smm smr sms smx sr- sra srb srd sri srm srr srs srx ss- ssa ssb ssd ssi ssm ssr sss ssx sxi sxm sxs xaa xad xam xar xas xbr xbx xda xdb xdi xdm xdr xds xia xii xis xix xma xmd xmi xmm xmr xms xmx xrd xrx xsa xsb xsi xsm xss xxi xxx