-ic a-a a-b a-c a-i aaa aab aac aad aai aan aao aar aax ab- aba abb abc abd abi abn abo abr abx ac- aca acb acc acd aci acn aco acr acx ad- ada adb adc add adi adn ado adr adx ai- aia aib aic aid aii ain aio air aix an- ana anb anc and ani ann ano anr anx aoa aob aoc aod aoi aon aoo aor aox ar- ara arb arc ard ari arn aro arr arx ax- axa axi axn axo axr axx baa bab bac bad bai ban bao bar bax bba bbb bbc bbd bbi bbn bbo bbr bbx bca bcb bcc bcd bci bcn bco bcr bcx bda bdb bdc bdd bdi bdo bdr bdx bi- bia bib bic bid bii bin bio bir bix bna bnb bnc bnd bni bnn bno bnr bnx boa bob boc bod boi bon boo bor box bra brb brd bri brn bro brr brx bxb bxd bxi bxn bxo bxx c-- caa cab cac cad cai can cao car cax cba cbb cbc cbd cbi cbn cbo cbr cbx cca ccb ccc ccd cci ccn cco ccr ccx cda cdb cdc cdd cdi cdn cdo cdr cdx ci- cia cib cic cid cii cin cio cir cix cn- cna cnb cnc cnd cni cnn cno cnr cnx co- coa cob coc cod coi con coo cor cox cra crb crc crd cri crn cro crr crx cxc cxi cxo cxr cxx daa dab dac dad dai dan dao dar dax dba dbb dbc dbd dbi dbn dbo dbr dbx dca dcb dcc dcd dci dcn dco dcr dcx dda ddb ddc ddd ddi ddn ddo ddr ddx di- dia dib dic did dii din dio dir dix dna dnb dnc dnd dni dnn dno dnr doa dob doc dod doi don doo dor dox dra drb drc drd dri drn dro drr drx dxc dxd dxi dxn dxo dxr dxx i-d ia- iaa iab iac iad iai ian iao iar iba ibb ibc ibd ibi ibn ibo ibr ibx ica icb icc icd ici icn ico icr ida idb idc idd idi idn ido idr idx iia iib iic iid iii iin iio iir iix in- ina inb inc ind ini inn ino inr inx io- ioa iob ioc iod ioi ion ioo ior ir- ira irb irc ird iri irn iro irr irx ixc ixi ixn n-i naa nab nac nad nai nan nao nar nax nba nbb nbc nbd nbi nbn nbo nbr nbx nca ncb ncc ncd nci ncn nco ncr ncx nda ndb ndc ndd ndi ndn ndo ndr nia nib nic nid nii nin nio nir nix nna nnb nnc nni nnn nno no- noa nob noc nod noi non noo nor nox nra nrb nrc nrd nri nrn nro nrr nrx nxc nxd o-i oaa oab oac oad oai oan oao oar oax ob- oba obb obc obd obi obn obo obr obx oc- oca ocb occ ocd oci ocn oco ocr ocx oda odb odc odd odi odn odo odr oia oib oic oid oii oin oio oir on- ona onb onc ond oni onn ono onr onx oo- ooa oob ooc ood ooi oon ooo oor oox or- ora orb orc ord ori orn oro orr orx ox- oxa oxb oxc oxi oxn oxo oxx ra- raa rab rac rad rai ran rao rar rax rba rbb rbc rbd rbi rbn rbo rbr rbx rca rcb rcc rcd rci rcn rco rcr rcx rda rdb rdc rdd rdi rdn rdo rdr rdx ria rib ric rid rii rin rio rir rix rna rnb rnc rnd rni rnn rno rnr roa rob roc rod roi ron roo ror rox rra rrb rrc rrd rri rrn rrr rxr xaa xac xad xan xar xbc xbr xbx xcb xcd xci xcr xcx xda xdb xdc xdi xdr xia xic xii xin xio xix xna xnc xno xoa xoc xod xoi xon xoo xor xox xrc xrd xrx xxi xxo xxx