-ic a-a a-b a-c a-i aaa aab aac aad aai aam aao aar ab- aba abb abc abd abi abm abo abr ac- aca acb acc acd aci acm aco acr ad- ada adb adc add adi adm ado adr ai- aia aib aic aid aii aim aio air ama amb amc amd ami amm amo amr aoa aob aoc aod aoi aom aoo aor ar- ara arb arc ard ari arm aro arr baa bab bac bad bai bam bao bar bba bbb bbc bbd bbi bbm bbo bbr bca bcb bcc bcd bci bcm bco bcr bda bdb bdc bdd bdi bdm bdo bdr bi- bia bib bic bid bii bim bio bir bma bmb bmc bmd bmi bmm bmo bmr boa bob boc bod boi bom boo bor bra brb brd bri brm bro brr c-- caa cab cac cad cai cam cao car cba cbb cbc cbd cbi cbm cbo cbr cca ccb ccc ccd cci ccm cco ccr cda cdb cdc cdd cdi cdm cdo cdr ci- cia cib cic cid cii cim cio cir cma cmb cmc cmd cmi cmm cmo cmr co- coa cob coc cod coi com coo cor cra crb crc crd cri crm cro crr daa dab dac dad dai dam dao dar dba dbb dbc dbd dbi dbm dbo dbr dca dcb dcc dcd dci dcm dco dcr dda ddb ddc ddd ddi ddm ddo ddr di- dia dib dic did dii dim dio dir dma dmb dmc dmd dmi dmm dmo dmr doa dob doc dod doi dom doo dor dra drb drc drd dri drm dro drr i-d ia- iaa iab iac iad iai iam iao iar iba ibb ibc ibd ibi ibm ibo ibr ica icb icc icd ici icm ico icr ida idb idc idd idi idm ido idr iia iib iic iid iii iim iio iir im- ima imb imc imd imi imm imo io- ioa iob ioc iod ioi iom ioo ior ir- ira irb irc ird iri irm iro irr m-o m-r maa mab mac mad mai mam mao mar mba mbb mbc mbd mbi mbm mbo mbr mc- mca mcb mcc mcd mci mcm mco mcr mda mdb mdc mdd mdi mdm mdo mdr mi- mia mib mic mid mii mim mio mir mma mmb mmc mmd mmi mmm mmo mmr moa mob moc mod moi mom moo mor mra mrb mrc mrd mri mrm mro mrr o-i oaa oab oac oad oai oam oao oar ob- oba obb obc obd obi obm obo obr oc- oca ocb occ ocd oci ocm oco ocr oda odb odc odd odi odm odo odr oia oib oic oid oii oim oio oir om- oma omb omc omd omi omm omo omr oo- ooa oob ooc ood ooi oom ooo oor or- ora orb orc ord ori orm oro orr ra- raa rab rac rad rai ram rao rar rba rbb rbc rbd rbi rbm rbo rbr rca rcb rcc rcd rci rcm rco rcr rda rdb rdc rdd rdi rdm rdo rdr ria rib ric rid rii rim rio rir rma rmb rmc rmd rmi rmm rmo rmr roa rob roc rod roi rom roo ror rra rrb rrc rrd rri rrm rrr