-ic a-a a-b a-c a-i aaa aab aac aad aai aan aar ab- aba abb abc abd abi abn abr ac- aca acb acc acd aci acn acr ad- ada adb adc add adi adn adr ai- aia aib aic aid aii ain air an- ana anb anc and ani ann anr ar- ara arb arc ard ari arn arr baa bab bac bad bai ban bar bba bbb bbc bbd bbi bbn bbr bca bcb bcc bcd bci bcn bcr bda bdb bdc bdd bdi bdr bi- bia bib bic bid bii bin bir bna bnb bnc bnd bni bnn bnr bra brb brd bri brn brr c-- caa cab cac cad cai can car cba cbb cbc cbd cbi cbn cbr cca ccb ccc ccd cci ccn ccr cda cdb cdc cdd cdi cdn cdr ci- cia cib cic cid cii cin cir cn- cna cnb cnc cnd cni cnn cnr cra crb crc crd cri crn crr daa dab dac dad dai dan dar dba dbb dbc dbd dbi dbn dbr dca dcb dcc dcd dci dcn dcr dda ddb ddc ddd ddi ddn ddr di- dia dib dic did dii din dir dna dnb dnc dnd dni dnn dnr dra drb drc drd dri drn drr i-d ia- iaa iab iac iad iai ian iar iba ibb ibc ibd ibi ibn ibr ica icb icc icd ici icn icr ida idb idc idd idi idn idr iia iib iic iid iii iin iir in- ina inb inc ind ini inn inr ir- ira irb irc ird iri irn irr n-i naa nab nac nad nai nan nar nba nbb nbc nbd nbi nbn nbr nca ncb ncc ncd nci ncn ncr nda ndb ndc ndd ndi ndn ndr nia nib nic nid nii nin nir nna nnb nnc nni nnn nra nrb nrc nrd nri nrn nrr ra- raa rab rac rad rai ran rar rba rbb rbc rbd rbi rbn rbr rca rcb rcc rcd rci rcn rcr rda rdb rdc rdd rdi rdn rdr ria rib ric rid rii rin rir rna rnb rnc rnd rni rnn rnr rra rrb rrc rrd rri rrn rrr