-er -ic a-a a-b a-c a-i aaa aab aac aad aae aah aai aak aar ab- aba abb abc abd abe abh abi abk abr ac- aca acb acc acd ace ach aci ack acr ad- ada adb adc add ade adh adi adk adr aea aeb aec aed aee aeh aei aek aer aha ahb ahc ahd ahe ahh ahi ahk ahr ai- aia aib aic aid aie aih aii aik air aka akb akc akd ake akh aki akk akr ar- ara arb arc ard are arh ari ark arr baa bab bac bad bae bah bai bak bar bba bbb bbc bbd bbe bbh bbi bbk bbr bca bcb bcc bcd bce bch bci bck bcr bda bdb bdc bdd bde bdh bdi bdk bdr be- bea beb bec bed bee beh bei bek ber bha bhb bhc bhd bhe bhh bhi bhk bhr bi- bia bib bic bid bie bih bii bik bir bka bkb bkc bke bkk bkr bra brb brd bre brh bri brk brr c-- caa cab cac cad cae cah cai cak car cba cbb cbc cbd cbe cbh cbi cbk cbr cca ccb ccc ccd cce cch cci cck ccr cda cdb cdc cdd cde cdh cdi cdk cdr ce- cea ceb cec ced cee ceh cei cek cer ch- cha chb chc chd che chh chi chk chr ci- cia cib cic cid cie cih cii cik cir cka ckb ckc ckd ckh cki cra crb crc crd cre crh cri crk crr daa dab dac dad dae dah dai dak dar dba dbb dbc dbd dbe dbh dbi dbk dbr dca dcb dcc dcd dce dci dck dcr dda ddb ddc ddd dde ddh ddi ddk ddr de- dea deb dec ded dee deh dei dek der dh- dha dhb dhc dhd dhe dhh dhi dhk dhr di- dia dib dic did die dih dii dik dir dka dkb dkc dke dki dkk dkr dra drb drc drd dre dri drk drr eaa eab eac ead eae eah eai eak ear eba ebb ebc ebd ebe ebh ebi ebk ebr ec- eca ecb ecc ecd ece ech eci eck ecr ed- eda edb edc edd ede edh edi edk edr eea eeb eec eed eee eek eer eha ehb ehc ehd ehe ehh ehi ehr eia eib eic eid eie eii eik eir eka ekb ekc ekd eke ekh eki ekr era erb erc erd ere erh eri erk err h-i haa hab hac had hae hah hai hak har hba hbb hbc hbd hbe hbh hbi hbk hbr hca hcb hcc hcd hce hch hci hck hcr hda hdb hdc hdd hde hdh hdi hdk hdr he- hea heb hec hed hee heh hei hek her hha hhb hhc hhd hhe hhh hhi hhk hhr hia hib hic hid hie hih hii hik hir hka hkb hkd hkh hki hkk hkr hr- hra hrb hrc hrd hre hrh hri hrk hrr i-d ia- iaa iab iac iad iae iah iai iar iba ibb ibc ibd ibe ibh ibi ibk ibr ica icb icc icd ice ich ici ick icr ida idb idc idd ide idh idi idk idr ie- iea iec ied iee iei iek ier iha ihb ihc ihd ihe ihh ihi ihk ihr iia iib iic iid iie iih iii iir ika ikb ikc ike iki ikk ikr ir- ira irb irc ird ire iri irk irr ka- kaa kab kac kad kae kah kai kak kar kba kbb kbc kbd kbe kbh kbi kbk kbr kca kcb kcc kcd kce kch kci kck kcr kda kdb kdc kde kdh kdk kdr ke- kea keb kec ked kee keh kei kek ker kha khe khh khi khk khr kia kib kic kid kie kih kii kik kir kkb kkc kke kkh kki kkk kkr kra krc krd kri krk krr ra- raa rab rac rad rae rah rai rak rar rba rbb rbc rbd rbe rbh rbi rbk 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 rek rer rh- rha rhb rhc rhd rhe rhh rhi rhr ria rib ric rid rie rih rii rik rir rkb rkc rke rkk rra rrb rrc rrd rrh rri rrk rrr