-er -ic a-a a-b a-c a-i aaa aab aac aad aae aah aai aar ab- aba abb abc abd abe abh abi abr ac- aca acb acc acd ace ach aci acr ad- ada adb adc add ade adh adi adr aea aeb aec aed aee aeh aei aer aha ahb ahc ahd ahe ahh ahi ahr ai- aia aib aic aid aie aih aii air ar- ara arb arc ard are arh ari arr baa bab bac bad bae bah bai bar bba bbb bbc bbd bbe bbh bbi bbr bca bcb bcc bcd bce bch bci bcr bda bdb bdc bdd bde bdh bdi bdr be- bea beb bec bed bee beh bei ber bha bhb bhc bhd bhe bhh bhi bhr bi- bia bib bic bid bie bih bii bir bra brb brd bre brh bri brr c-- caa cab cac cad cae cah cai car cba cbb cbc cbd cbe cbh cbi cbr cca ccb ccc ccd cce cch cci ccr cda cdb cdc cdd cde cdh cdi cdr ce- cea ceb cec ced cee ceh cei cer ch- cha chb chc chd che chh chi chr ci- cia cib cic cid cie cih cii cir cra crb crc crd cre crh cri crr daa dab dac dad dae dah dai dar dba dbb dbc dbd dbe dbh dbi dbr dca dcb dcc dcd dce dci dcr dda ddb ddc ddd dde ddh ddi ddr de- dea deb dec ded dee deh dei der dh- dha dhb dhc dhd dhe dhh dhi dhr di- dia dib dic did die dih dii dir dra drb drc drd dre dri drr eaa eab eac ead eae eah eai ear eba ebb ebc ebd ebe ebh ebi ebr ec- eca ecb ecc ecd ece ech eci ecr ed- eda edb edc edd ede edh edi edr eea eeb eec eed eee eer eha ehb ehc ehd ehe ehh ehi ehr eia eib eic eid eie eii eir era erb erc erd ere erh eri err h-i haa hab hac had hae hah hai har hba hbb hbc hbd hbe hbh hbi hbr hca hcb hcc hcd hce hch hci hcr hda hdb hdc hdd hde hdh hdi hdr he- hea heb hec hed hee heh hei her hha hhb hhc hhd hhe hhh hhi hhr hia hib hic hid hie hih hii hir hr- hra hrb hrc hrd hre hrh hri hrr i-d ia- iaa iab iac iad iae iah iai iar iba ibb ibc ibd ibe ibh ibi ibr ica icb icc icd ice ich ici icr ida idb idc idd ide idh idi idr ie- iea iec ied iee iei ier iha ihb ihc ihd ihe ihh ihi ihr iia iib iic iid iie iih iii iir ir- ira irb irc ird ire iri irr ra- raa rab rac rad rae rah rai rar rba rbb rbc rbd rbe rbh rbi rbr rca rcb rcc rcd rce rch rci rcr rda rdb rdc rdd rde rdh rdi rdr re- rea reb rec red ree reh rei rer rh- rha rhb rhc rhd rhe rhh rhi rhr ria rib ric rid rie rih rii rir rra rrb rrc rrd rrh rri rrr