a-a a-b a-i aaa aab aad aai aan aao aap ab- aba abb abd abi abn abo abp ad- ada adb add adi adn ado adp ai- aia aib aid aii ain aio aip an- ana anb and ani ann ano anp aoa aob aod aoi aon aoo aop ap- apa apb apd api apn apo app b-p baa bab bad bai ban bao bap bba bbb bbd bbi bbn bbo bbp bda bdb bdd bdi bdo bdp bi- bia bib bid bii bin bio bip bna bnb bnd bni bnn bno bnp boa bob bod boi bon boo bop bpa bpb bpd bpi bpn bpo bpp daa dab dad dai dan dao dap dba dbb dbd dbi dbn dbo dbp dda ddb ddd ddi ddn ddo ddp di- dia dib did dii din dio dip dna dnb dnd dni dnn dno dnp doa dob dod doi don doo dop dpa dpb dpd dpi dpn dpo dpp i-d ia- iaa iab iad iai ian iao iap iba ibb ibd ibi ibn ibo ibp ida idb idd idi idn ido idp iia iib iid iii iin iio iip in- ina inb ind ini inn ino inp io- ioa iob iod ioi ion ioo iop ipa ipb ipd ipi ipn ipo ipp n-i naa nab nad nai nan nao nap nba nbb nbd nbi nbn nbo nbp nda ndb ndd ndi ndn ndo ndp nia nib nid nii nin nio nip nna nnb nni nnn nno nnp no- noa nob nod noi non noo nop npa npb npd npi npn npo npp o-i oaa oab oad oai oan oao oap ob- oba obb obd obi obn obo obp oda odb odd odi odn odo odp oia oib oid oii oin oio oip on- ona onb ond oni onn ono onp oo- ooa oob ood ooi oon ooo oop op- opa opb opd opi opn opo opp p-p paa pab pad pai pan pao pap pba pbb pbd pbi pbn pbo pbp pda pdb pdd pdi pdn pdo pdp pia pib pid pii pin pio pip pn- pna pnb pnd pni pnn pno pnp poa pob pod poi pon poo pop ppa ppb ppd ppi ppn ppo ppp