-ic a-a a-b a-c a-i aaa aab aac aai aam aan aao aar aax ab- aba abb abc abi abm abn abo abr abx ac- aca acb acc aci acm acn aco acr acx ai- aia aib aic aii aim ain aio air aix ama amb amc ami amm amn amo amr amx an- ana anb anc ani anm ann ano anr anx aoa aob aoc aoi aom aon aoo aor aox ar- ara arb arc ari arm arn aro arr arx ax- axa axi axm axn axo axr axx baa bab bac bai bam ban bao bar bax bba bbb bbc bbi bbm bbn bbo bbr bbx bca bcb bcc bci bcm bcn bco bcr bcx bi- bia bib bic bii bim bin bio bir bix bma bmb bmc bmi bmm bmn bmo bmr bmx bna bnb bnc bni bnn bno bnr bnx boa bob boc boi bom bon boo bor box bra brb bri brm brn bro brr brx bxb bxi bxm bxn bxo bxx c-- caa cab cac cai cam can cao car cax cba cbb cbc cbi cbm cbn cbo cbr cbx cca ccb ccc cci ccm ccn cco ccr ccx ci- cia cib cic cii cim cin cio cir cix cma cmb cmc cmi cmm cmn cmo cmr cmx cn- cna cnb cnc cni cnm cnn cno cnr cnx co- coa cob coc coi com con coo cor cox cra crb crc cri crm crn cro crr crx cxc cxi cxo cxr cxx ia- iaa iab iac iai iam ian iao iar iba ibb ibc ibi ibm ibn ibo ibr ibx ica icb icc ici icm icn ico icr iia iib iic iii iim iin iio iir iix im- ima imb imc imi imm imn imo imx in- ina inb inc ini inm inn ino inr inx io- ioa iob ioc ioi iom ion ioo ior ir- ira irb irc iri irm irn iro irr irx ixc ixi ixn m-o m-r maa mab mac mai mam man mao mar max mba mbb mbc mbi mbm mbo mbr mbx mc- mca mcb mcc mci mcm mcn mco mcr mcx mi- mia mib mic mii mim min mio mir mix mma mmb mmc mmi mmm mmn mmo mmr mmx mna mnb mnc mni mnm mnn mno mnr moa mob moc moi mom mon moo mor mox mra mrb mrc mri mrm mrn mro mrr mrx mxa mxc mxi mxn mxr n-i naa nab nac nai nam nan nao nar nax nba nbb nbc nbi nbm nbn nbo nbr nbx nca ncb ncc nci ncm ncn nco ncr ncx nia nib nic nii nim nin nio nir nix nma nmb nmc nmi nmm nmn nmo nmr nna nnb nnc nni nnm nnn nno no- noa nob noc noi nom non noo nor nox nra nrb nrc nri nrm nrn nro nrr nrx nxc o-i oaa oab oac oai oam oan oao oar oax ob- oba obb obc obi obm obn obo obr obx oc- oca ocb occ oci ocm ocn oco ocr ocx oia oib oic oii oim oin oio oir om- oma omb omc omi omm omn omo omr omx on- ona onb onc oni onn ono onr onx oo- ooa oob ooc ooi oom oon ooo oor oox or- ora orb orc ori orm orn oro orr orx ox- oxa oxb oxc oxi oxn oxo oxx ra- raa rab rac rai ram ran rao rar rax rba rbb rbc rbi rbm rbn rbo rbr rbx rca rcb rcc rci rcm rcn rco rcr rcx ria rib ric rii rim rin rio rir rix rma rmb rmc rmi rmm rmn rmo rmr rmx rna rnb rnc rni rnm rnn rno rnr roa rob roc roi rom ron roo ror rox rra rrb rrc rri rrm rrn rrr rxr xaa xac xam xan xar xbc xbr xbx xcb xci xcr xcx xia xic xii xin xio xix xma xmc xmi xmm xmo xmr xmx xna xnc xno xoa xoc xoi xom xon xoo xor xox xrc xrx xxi xxo xxx