-ic a-a a-b a-c a-i aaa aab aac aad aah aai aar ab- aba abb abc abd abh abi abr ac- aca acb acc acd ach aci acr ad- ada adb adc add adh adi adr aha ahb ahc ahd ahh ahi ahr ai- aia aib aic aid aih aii air ar- ara arb arc ard arh ari arr baa bab bac bad bah bai bar bba bbb bbc bbd bbh bbi bbr bca bcb bcc bcd bch bci bcr bda bdb bdc bdd bdh bdi bdr bha bhb bhc bhd bhh bhi bhr bi- bia bib bic bid bih bii bir bra brb brd brh bri brr c-- caa cab cac cad cah cai car cba cbb cbc cbd cbh cbi cbr cca ccb ccc ccd cch cci ccr cda cdb cdc cdd cdh cdi cdr ch- cha chb chc chd chh chi chr ci- cia cib cic cid cih cii cir cra crb crc crd crh cri crr daa dab dac dad dah dai dar dba dbb dbc dbd dbh dbi dbr dca dcb dcc dcd dci dcr dda ddb ddc ddd ddh ddi ddr dh- dha dhb dhc dhd dhh dhi dhr di- dia dib dic did dih dii dir dra drb drc drd dri drr h-i haa hab hac had hah hai har hba hbb hbc hbd hbh hbi hbr hca hcb hcc hcd hch hci hcr hda hdb hdc hdd hdh hdi hdr hha hhb hhc hhd hhh hhi hhr hia hib hic hid hih hii hir hr- hra hrb hrc hrd hrh hri hrr i-d ia- iaa iab iac iad iah iai iar iba ibb ibc ibd ibh ibi ibr ica icb icc icd ich ici icr ida idb idc idd idh idi idr iha ihb ihc ihd ihh ihi ihr iia iib iic iid iih iii iir ir- ira irb irc ird iri irr ra- raa rab rac rad rah rai rar rba rbb rbc rbd rbh rbi rbr rca rcb rcc rcd rch rci rcr rda rdb rdc rdd rdh rdi rdr rh- rha rhb rhc rhd rhh rhi rhr ria rib ric rid rih rii rir rra rrb rrc rrd rrh rri rrr