a-a a-c a-q aaa aac aaf aan aao aaq aas ac- aca acc acf acn aco acq acs af- afa afc aff afn afo afq afs an- ana anc anf ann ano anq ans aoa aoc aof aon aoo aos aqa aqc aqf aqn aqo aqs as- asa asc asf asn aso asq ass c-- caa cac caf can cao caq cas cca ccc ccf ccn cco ccs cfa cfc cff cfn cfo cfq cfs cn- cna cnc cnf cnn cno cns co- coa coc cof con coo coq cos cqa cqc cqf cqo cqs csa csc csf csn cso csq css faa fac faf fan fao faq fas fca fcc fcf fcn fco fcs ffa ffc fff ffn ffo ffs fna fnc fnf fnn fns foa foc fof fon foo fos fsa fsc fsf fsn fso fsq fss naa nac naf nan nao nas nca ncc ncf ncn nco ncs nfa nfc nff nfn nfo nfs nna nnc nnf nnn nno nns no- noa noc nof non noo nos nqc nqs nsa nsc nsf nsn nso nss oaa oac oaf oan oao oaq oas oc- oca occ ocf ocn oco ocs of- ofa ofc off ofn ofo ofs on- ona onc onf onn ono ons oo- ooa ooc oof oon ooo oos oqo os- osa osc osf osn oso osq oss qaa qac qaf qan qas qca qcc qco qcs qfa qfc qff qfs qns qof qoo qos qqq qsa qsc qso saa sac saf san sao saq sas sca scc scf scn sco scs sfa sfc sff sfn sfo sfs sna snc snf snn sno sns soa soc sof son soo soq sos sqa sqn sqq sqs ss- ssa ssc ssf ssn sso ssq sss