-ic a-a a-b a-c a-i aaa aab aac aah aai aan aao ab- aba abb abc abh abi abn abo ac- aca acb acc ach aci acn aco aha ahb ahc ahh ahi ahn aho ai- aia aib aic aih aii ain aio an- ana anb anc anh ani ann ano aoa aob aoc aoh aoi aon aoo baa bab bac bah bai ban bao bba bbb bbc bbh bbi bbn bbo bca bcb bcc bch bci bcn bco bha bhb bhc bhh bhi bho bi- bia bib bic bih bii bin bio bna bnb bnc bni bnn bno boa bob boc boh boi bon boo c-- caa cab cac cah cai can cao cba cbb cbc cbh cbi cbn cbo cca ccb ccc cch cci ccn cco ch- cha chb chc chh chi chn cho ci- cia cib cic cih cii cin cio cn- cna cnb cnc cnh cni cnn cno co- coa cob coc coh coi con coo h-i haa hab hac hah hai han hao hba hbb hbc hbh hbi hbn hbo hca hcb hcc hch hci hcn hco hha hhb hhc hhh hhi hhn hho hia hib hic hih hii hin hio hna hnb hnc hnh hnn hno hoa hob hoc hoh hoi hon hoo ia- iaa iab iac iah iai ian iao iba ibb ibc ibh ibi ibn ibo ica icb icc ich ici icn ico iha ihb ihc ihh ihi ihn iho iia iib iic iih iii iin iio in- ina inb inc inh ini inn ino io- ioa iob ioc ioh ioi ion ioo n-i naa nab nac nah nai nan nao nba nbb nbc nbi nbn nbo nca ncb ncc nch nci ncn nco nha nhb nhc nhh nhi nhn nia nib nic nih nii nin nio nna nnb nnc nnh nni nnn nno no- noa nob noc noh noi non noo o-i oaa oab oac oah oai oan oao ob- oba obb obc obh obi obn obo oc- oca ocb occ och oci ocn oco oha ohc ohh ohi ohn oho oia oib oic oii oin oio on- ona onb onc onh oni onn ono oo- ooa oob ooc ooh ooi oon ooo