-ic a-a a-b a-c a-i aaa aab aac aad aaf aah aai aao aar aas ab- aba abb abc abd abf abh abi abo abr abs ac- aca acb acc acd acf ach aci aco acr acs ad- ada adb adc add adf adh adi ado adr ads af- afa afb afc afd aff afh afi afo afr afs aha ahb ahc ahd ahf ahh ahi aho ahr ahs ai- aia aib aic aid aif aih aii aio air ais aoa aob aoc aod aof aoh aoi aoo aor aos ar- ara arb arc ard arf arh ari aro arr ars as- asa asb asc asd asf ash asi aso asr ass baa bab bac bad baf bah bai bao bar bas bba bbb bbc bbd bbf bbh bbi bbo bbr bbs bca bcb bcc bcd bcf bch bci bco bcr bcs bda bdb bdc bdd bdf bdh bdi bdo bdr bds bfa bfb bfc bfd bff bfh bfi bfo bfr bfs bha bhb bhc bhd bhf bhh bhi bho bhr bhs bi- bia bib bic bid bif bih bii bio bir bis boa bob boc bod bof boh boi boo bor bos bra brb brd brf brh bri bro brr brs bsa bsb bsc bsd bsf bsh bsi bso bsr bss c-- caa cab cac cad caf cah cai cao car cas cba cbb cbc cbd cbf cbh cbi cbo cbr cbs cca ccb ccc ccd ccf cch cci cco ccr ccs cda cdb cdc cdd cdf cdh cdi cdo cdr cds cfa cfb cfc cfd cff cfh cfi cfo cfr cfs ch- cha chb chc chd chf chh chi cho chr chs ci- cia cib cic cid cif cih cii cio cir cis co- coa cob coc cod cof coh coi coo cor cos cra crb crc crd crf crh cri cro crr crs csa csb csc csd csf csh csi cso csr css daa dab dac dad daf dah dai dao dar das dba dbb dbc dbd dbf dbh dbi dbo dbr dbs dca dcb dcc dcd dcf dci dco dcr dcs dda ddb ddc ddd ddf ddh ddi ddo ddr dds dfa dfb dfc dfd dff dfh dfi dfo dfr dfs dh- dha dhb dhc dhd dhf dhh dhi dho dhr dhs di- dia dib dic did dif dih dii dio dir dis doa dob doc dod dof doh doi doo dor dos dra drb drc drd dri dro drr drs dsa dsb dsc dsd dsf dsh dsi dso dsr dss faa fab fac fad faf fah fai fao far fas fba fbb fbc fbd fbf fbh fbi fbo fbr fbs fca fcb fcc fcd fcf fci fco fcr fcs fda fdb fdc fdd fdf fdh fdi fdo fdr fds ffa ffc ffd fff ffh ffi ffo ffr ffs fha fhb fhc fhf fhh fhi fho fhr fhs fia fib fic fid fif fih fii fir fis foa fob foc fof foh foi foo for fos fra frb frc frd frf frh fri fro frr frs fsa fsb fsc fsd fsf fsh fsi fso fsr fss h-i haa hab hac had haf hah hai hao har has hba hbb hbc hbd hbf hbh hbi hbo hbr hbs hca hcb hcc hcd hcf hch hci hco hcr hcs hda hdb hdc hdd hdf hdh hdi hdo hdr hds hfa hfb hfc hfd hff hfh hfi hfo hfr hfs hha hhb hhc hhd hhf hhh hhi hho hhr hhs hia hib hic hid hif hih hii hio hir his hoa hob hoc hod hof hoh hoi hoo hor hos hr- hra hrb hrc hrd hrf hrh hri hro hrr hrs hsa hsb hsc hsd hsf hsh hsi hsr hss i-d i-f ia- iaa iab iac iad iaf iah iai iao iar ias iba ibb ibc ibd ibf ibh ibi ibo ibr ibs ica icb icc icd icf ich ici ico icr ics ida idb idc idd idf idh idi ido idr ids ifa ifb ifc ifd iff ifi ifo ifr ifs iha ihb ihc ihd ihf ihh ihi iho ihr ihs iia iib iic iid iif iih iii iio iir iis io- ioa iob ioc iod iof ioh ioi ioo ior ios ir- ira irb irc ird irf iri iro irr irs is- isa isb isc isd isf ish isi iso isr iss o-i oaa oab oac oad oaf oah oai oao oar oas ob- oba obb obc obd obf obh obi obo obr obs oc- oca ocb occ ocd ocf och oci oco ocr ocs oda odb odc odd odf odh odi odo odr ods of- ofa ofb ofc ofd off ofi ofo ofr ofs oha ohc ohd ohf ohh ohi oho ohr ohs oia oib oic oid oif oii oio oir ois oo- ooa oob ooc ood oof ooh ooi ooo oor oos or- ora orb orc ord orf orh ori oro orr ors os- osa osb osc osd osf osh osi oso osr oss ra- raa rab rac rad raf rah rai rao rar ras rba rbb rbc rbd rbf rbh rbi rbo rbr rbs rca rcb rcc rcd rcf rch rci rco rcr rcs rda rdb rdc rdd rdf rdh rdi rdo rdr rds rfa rfb rfc rfd rff rfh rfi rfo rfr rfs rh- rha rhb rhc rhd rhf rhh rhi rho rhr rhs ria rib ric rid rif rih rii rio rir ris roa rob roc rod rof roh roi roo ror ros rra rrb rrc rrd rrf rrh rri rrr rrs rsa rsb rsc rsd rsf rsh rsi rso rsr rss saa sab sac sad saf sah sai sao sar sas sba sbb sbc sbd sbf sbh sbi sbo sbr sbs sca scb scc scd scf sch sci sco scr scs sda sdb sdc sdd sdf sdh sdi sdo sdr sds sfa sfb sfc sfd sff sfh sfi sfo sfr sfs sh- sha shb shc shd shf shh shi sho shr shs sia sib sic sid sif sih sii sio sir sis soa sob soc sod sof soh soi soo sor