-ic a-a a-b a-c a-i aaa aab aac aad aah aai aao aar ab- aba abb abc abd abh abi abo abr ac- aca acb acc acd ach aci aco acr ad- ada adb adc add adh adi ado adr aha ahb ahc ahd ahh ahi aho ahr ai- aia aib aic aid aih aii aio air aoa aob aoc aod aoh aoi aoo aor ar- ara arb arc ard arh ari aro arr baa bab bac bad bah bai bao bar bba bbb bbc bbd bbh bbi bbo bbr bca bcb bcc bcd bch bci bco bcr bda bdb bdc bdd bdh bdi bdo bdr bha bhb bhc bhd bhh bhi bho bhr bi- bia bib bic bid bih bii bio bir boa bob boc bod boh boi boo bor bra brb brd brh bri bro brr c-- caa cab cac cad cah cai cao car cba cbb cbc cbd cbh cbi cbo cbr cca ccb ccc ccd cch cci cco ccr cda cdb cdc cdd cdh cdi cdo cdr ch- cha chb chc chd chh chi cho chr ci- cia cib cic cid cih cii cio cir co- coa cob coc cod coh coi coo cor cra crb crc crd crh cri cro crr daa dab dac dad dah dai dao dar dba dbb dbc dbd dbh dbi dbo dbr dca dcb dcc dcd dci dco dcr dda ddb ddc ddd ddh ddi ddo ddr dh- dha dhb dhc dhd dhh dhi dho dhr di- dia dib dic did dih dii dio dir doa dob doc dod doh doi doo dor dra drb drc drd dri dro drr h-i haa hab hac had hah hai hao har hba hbb hbc hbd hbh hbi hbo hbr hca hcb hcc hcd hch hci hco hcr hda hdb hdc hdd hdh hdi hdo hdr hha hhb hhc hhd hhh hhi hho hhr hia hib hic hid hih hii hio hir hoa hob hoc hod hoh hoi hoo hor hr- hra hrb hrc hrd hrh hri hro hrr i-d ia- iaa iab iac iad iah iai iao iar iba ibb ibc ibd ibh ibi ibo ibr ica icb icc icd ich ici ico icr ida idb idc idd idh idi ido idr iha ihb ihc ihd ihh ihi iho ihr iia iib iic iid iih iii iio iir io- ioa iob ioc iod ioh ioi ioo ior ir- ira irb irc ird iri iro irr o-i oaa oab oac oad oah oai oao oar ob- oba obb obc obd obh obi obo obr oc- oca ocb occ ocd och oci oco ocr oda odb odc odd odh odi odo odr oha ohc ohd ohh ohi oho ohr oia oib oic oid oii oio oir oo- ooa oob ooc ood ooh ooi ooo oor or- ora orb orc ord orh ori oro orr ra- raa rab rac rad rah rai rao rar rba rbb rbc rbd rbh rbi rbo rbr rca rcb rcc rcd rch rci rco rcr rda rdb rdc rdd rdh rdi rdo rdr rh- rha rhb rhc rhd rhh rhi rho rhr ria rib ric rid rih rii rio rir roa rob roc rod roh roi roo ror rra rrb rrc rrd rrh rri rrr