-ic a-a a-b a-c a-i aaa aab aac aah aai aap ab- aba abb abc abh abi abp ac- aca acb acc ach aci acp aha ahb ahc ahh ahi ahp ai- aia aib aic aih aii aip ap- apa apb apc aph api app b-p baa bab bac bah bai bap bba bbb bbc bbh bbi bbp bca bcb bcc bch bci bcp bha bhb bhc bhh bhi bhp bi- bia bib bic bih bii bip bpa bpb bpc bph bpi bpp c-- caa cab cac cah cai cap cba cbb cbc cbh cbi cbp cca ccb ccc cch cci ccp ch- cha chb chc chh chi chp ci- cia cib cic cih cii cip cpa cpb cpc cph cpi cpp h-i haa hab hac hah hai hap hba hbb hbc hbh hbi hbp hca hcb hcc hch hci hcp hha hhb hhc hhh hhi hhp hia hib hic hih hii hip hpa hpb hpc hph hpi hpp ia- iaa iab iac iah iai iap iba ibb ibc ibh ibi ibp ica icb icc ich ici icp iha ihb ihc ihh ihi ihp iia iib iic iih iii iip ipa ipb ipc ipi ipp p-p paa pab pac pah pai pap pba pbb pbc pbi pbp pca pcb pcc pch pci pcp pha phb phc phi php pia pib pic pih pii pip ppa ppb ppc pph ppi ppp