-ic a-a a-b a-c a-i aaa aab aac aah aai aan aao aap ab- aba abb abc abh abi abn abo abp ac- aca acb acc ach aci acn aco acp aha ahb ahc ahh ahi ahn aho ahp ai- aia aib aic aih aii ain aio aip an- ana anb anc anh ani ann ano anp aoa aob aoc aoh aoi aon aoo aop ap- apa apb apc aph api apn apo app b-p baa bab bac bah bai ban bao bap bba bbb bbc bbh bbi bbn bbo bbp bca bcb bcc bch bci bcn bco bcp bha bhb bhc bhh bhi bho bhp bi- bia bib bic bih bii bin bio bip bna bnb bnc bni bnn bno bnp boa bob boc boh boi bon boo bop bpa bpb bpc bph bpi bpn bpo bpp c-- caa cab cac cah cai can cao cap cba cbb cbc cbh cbi cbn cbo cbp cca ccb ccc cch cci ccn cco ccp ch- cha chb chc chh chi chn cho chp ci- cia cib cic cih cii cin cio cip cn- cna cnb cnc cnh cni cnn cno cnp co- coa cob coc coh coi con coo cop cpa cpb cpc cph cpi cpn cpo cpp h-i haa hab hac hah hai han hao hap hba hbb hbc hbh hbi hbn hbo hbp hca hcb hcc hch hci hcn hco hcp hha hhb hhc hhh hhi hhn hho hhp hia hib hic hih hii hin hio hip hna hnb hnc hnh hnn hno hoa hob hoc hoh hoi hon hoo hop hpa hpb hpc hph hpi hpn hpo hpp ia- iaa iab iac iah iai ian iao iap iba ibb ibc ibh ibi ibn ibo ibp ica icb icc ich ici icn ico icp iha ihb ihc ihh ihi ihn iho ihp iia iib iic iih iii iin iio iip in- ina inb inc inh ini inn ino inp io- ioa iob ioc ioh ioi ion ioo iop ipa ipb ipc ipi ipn ipo ipp n-i naa nab nac nah nai nan nao nap nba nbb nbc nbi nbn nbo nbp nca ncb ncc nch nci ncn nco ncp nha nhb nhc nhh nhi nhn nhp nia nib nic nih nii nin nio nip nna nnb nnc nnh nni nnn nno nnp no- noa nob noc noh noi non noo nop npa npb npc nph npi npn npo npp o-i oaa oab oac oah oai oan oao oap ob- oba obb obc obh obi obn obo obp oc- oca ocb occ och oci ocn oco ocp oha ohc ohh ohi ohn oho ohp oia oib oic oii oin oio oip on- ona onb onc onh oni onn ono onp oo- ooa oob ooc ooh ooi oon ooo oop op- opa opb opc oph opi opn opo opp p-p paa pab pac pah pai pan pao pap pba pbb pbc pbi pbn pbo pbp pca pcb pcc pch pci pcn pco pcp pha phb phc phi phn pho php pia pib pic pih pii pin pio pip pn- pna pnb pnc pnh pni pnn pno pnp poa pob poc poh poi pon poo pop ppa ppb ppc pph ppi ppn ppo ppp