a-a a-b a-i aaa aab aah aai aan aao aap ab- aba abb abh abi abn abo abp aha ahb ahh ahi ahn aho ahp ai- aia aib aih aii ain aio aip an- ana anb anh ani ann ano anp aoa aob aoh aoi aon aoo aop ap- apa apb aph api apn apo app b-p baa bab bah bai ban bao bap bba bbb bbh bbi bbn bbo bbp bha bhb bhh bhi bho bhp bi- bia bib bih bii bin bio bip bna bnb bni bnn bno bnp boa bob boh boi bon boo bop bpa bpb bph bpi bpn bpo bpp h-i haa hab hah hai han hao hap hba hbb hbh hbi hbn hbo hbp hha hhb hhh hhi hhn hho hhp hia hib hih hii hin hio hip hna hnb hnh hnn hno hoa hob hoh hoi hon hoo hop hpa hpb hph hpi hpn hpo hpp ia- iaa iab iah iai ian iao iap iba ibb ibh ibi ibn ibo ibp iha ihb ihh ihi ihn iho ihp iia iib iih iii iin iio iip in- ina inb inh ini inn ino inp io- ioa iob ioh ioi ion ioo iop ipa ipb ipi ipn ipo ipp n-i naa nab nah nai nan nao nap nba nbb nbi nbn nbo nbp nha nhb nhh nhi nhn nhp nia nib nih nii nin nio nip nna nnb nnh nni nnn nno nnp no- noa nob noh noi non noo nop npa npb nph npi npn npo npp o-i oaa oab oah oai oan oao oap ob- oba obb obh obi obn obo obp oha ohh ohi ohn oho ohp oia oib oii oin oio oip on- ona onb onh oni onn ono onp oo- ooa oob ooh ooi oon ooo oop op- opa opb oph opi opn opo opp p-p paa pab pah pai pan pao pap pba pbb pbi pbn pbo pbp pha phb phi phn pho php pia pib pih pii pin pio pip pn- pna pnb pnh pni pnn pno pnp poa pob poh poi pon poo pop ppa ppb pph ppi ppn ppo ppp