a-a a-c aaa aac aad aak aan aar ac- aca acc acd ack acn acr ad- ada adc add adk adn adr aka akc akd akk akn akr an- ana anc and ank ann anr ar- ara arc ard ark arn arr c-- caa cac cad cak can car cca ccc ccd cck ccn ccr cda cdc cdd cdk cdn cdr cka ckc ckd cn- cna cnc cnd cnn cnr cra crc crd crk crn crr daa dac dad dak dan dar dca dcc dcd dck dcn dcr dda ddc ddd ddk ddn ddr dka dkc dkk dkr dna dnc dnd dnk dnn dnr dra drc drd drk drn drr ka- kaa kac kad kak kan kar kca kcc kcd kck kcn kcr kda kdc kdk kdr kkc kkk kkn kkr kn- kna knc knd knk knn knr kra krc krd krk krn krr naa nac nad nak nan nar nca ncc ncd nck ncn ncr nda ndc ndd ndk ndn ndr nka nkc nkk nkn nkr nna nnc nnk nnn nra nrc nrd nrk nrn nrr ra- raa rac rad rak ran rar rca rcc rcd rcn rcr rda rdc rdd rdn rdr rkc rkk rna rnc rnd rnn rnr rra rrc rrd rrk rrn rrr