a-a a-b a-i a-q aaa aab aai aan aao aaq aas ab- aba abb abi abn abo abq abs ai- aia aib aii ain aio aiq ais an- ana anb ani ann ano anq ans aoa aob aoi aon aoo aos aqa aqi aqn aqo aqs as- asa asb asi asn aso asq ass baa bab bai ban bao baq bas bba bbb bbi bbn bbo bbq bbs bi- bia bib bii bin bio bis bna bnb bni bnn bno bns boa bob boi bon boo boq bos bsa bsb bsi bsn bso bss ia- iaa iab iai ian iao iaq ias iba ibb ibi ibn ibo ibs iia iib iii iin iio iis in- ina inb ini inn ino inq ins io- ioa iob ioi ion ioo ios iqa iqs is- isa isb isi isn iso isq iss n-i naa nab nai nan nao nas nba nbb nbi nbn nbo nbs nia nib nii nin nio niq nis nna nnb nni nnn nno nns no- noa nob noi non noo nos nqs nsa nsb nsi nsn nso nss o-i oaa oab oai oan oao oaq oas ob- oba obb obi obn obo obs oia oib oii oin oio ois on- ona onb oni onn ono ons oo- ooa oob ooi oon ooo oos oqb oqo os- osa osb osi osn oso osq oss qaa qan qas qba qbq qbs qin qio qis qnb qni qns qoi qoo qos qqq qsa qsi qso saa sab sai san sao saq sas sba sbb sbi sbn sbo sbq sbs sia sib sii sin sio siq sis sna snb sni snn sno sns soa sob soi son soo soq sos sqa sqi sqn sqq sqs ss- ssa ssb ssi ssn sso ssq sss