-ic a-a a-b a-c a-i aaa aab aac aah aai aao aap aas ab- aba abb abc abh abi abo abp abs ac- aca acb acc ach aci aco acp acs aha ahb ahc ahh ahi aho ahp ahs ai- aia aib aic aih aii aio aip ais aoa aob aoc aoh aoi aoo aop aos ap- apa apb apc aph api apo app aps as- asa asb asc ash asi aso asp ass b-p baa bab bac bah bai bao bap bas bba bbb bbc bbh bbi bbo bbp bbs bca bcb bcc bch bci bco bcp bcs bha bhb bhc bhh bhi bho bhp bhs bi- bia bib bic bih bii bio bip bis boa bob boc boh boi boo bop bos bpa bpb bpc bph bpi bpo bpp bps bsa bsb bsc bsh bsi bso bsp bss c-- caa cab cac cah cai cao cap cas cba cbb cbc cbh cbi cbo cbp cbs cca ccb ccc cch cci cco ccp ccs ch- cha chb chc chh chi cho chp chs ci- cia cib cic cih cii cio cip cis co- coa cob coc coh coi coo cop cos cpa cpb cpc cph cpi cpo cpp cps csa csb csc csh csi cso csp css h-i haa hab hac hah hai hao hap has hba hbb hbc hbh hbi hbo hbp hbs hca hcb hcc hch hci hco hcp hcs hha hhb hhc hhh hhi hho hhp hhs hia hib hic hih hii hio hip his hoa hob hoc hoh hoi hoo hop hos hpa hpb hpc hph hpi hpo hpp hps hsa hsb hsc hsh hsi hsp hss ia- iaa iab iac iah iai iao iap ias iba ibb ibc ibh ibi ibo ibp ibs ica icb icc ich ici ico icp ics iha ihb ihc ihh ihi iho ihp ihs iia iib iic iih iii iio iip iis io- ioa iob ioc ioh ioi ioo iop ios ipa ipb ipc ipi ipo ipp ips is- isa isb isc ish isi iso isp iss o-i oaa oab oac oah oai oao oap oas ob- oba obb obc obh obi obo obp obs oc- oca ocb occ och oci oco ocp ocs oha ohc ohh ohi oho ohp ohs oia oib oic oii oio oip ois oo- ooa oob ooc ooh ooi ooo oop oos op- opa opb opc oph opi opo opp ops os- osa osb osc osh osi oso osp oss p-p paa pab pac pah pai pao pap pas pba pbb pbc pbi pbo pbp pbs pca pcb pcc pch pci pco pcp pcs pha phb phc phi pho php phs pia pib pic pih pii pio pip pis poa pob poc poh poi poo pop pos ppa ppb ppc pph ppi ppo ppp pps ps- psa psb psc psh psi pso psp pss saa sab sac sah sai sao sap sas sba sbb sbc sbh sbi sbo sbp sbs sca scb scc sch sci sco scp scs sh- sha shb shc shh shi sho shp shs sia sib sic sih sii sio sip sis soa sob soc soh soi soo sop sos spa spb spc sph spi spo spp sps ss- ssa ssb ssc ssh ssi sso ssp sss