-er -ic -ji a-a a-b a-c a-i aaa aab aac aae aai aaj aar ab- aba abb abc abe abi abj abr ac- aca acb acc ace aci acj acr aea aeb aec aee aei aej aer ai- aia aib aic aie aii air aja ajb ajc aje aji ajj ajr ar- ara arb arc are ari arj arr baa bab bac bae bai baj bar bba bbb bbc bbe bbi bbr bca bcb bcc bce bci bcj bcr be- bea beb bec bee bei ber bi- bia bib bic bie bii bij bir bja bjc bji bjj bjr bra brb bre bri brj brr c-- c-j caa cab cac cae cai caj car cba cbb cbc cbe cbi cbj cbr cca ccb ccc cce cci ccj ccr ce- cea ceb cec cee cei cej cer ci- cia cib cic cie cii cij cir cja cjb cjc cjr cra crb crc cre cri crj crr eaa eab eac eae eai eaj ear eba ebb ebc ebe ebi ebj ebr ec- eca ecb ecc ece eci ecj ecr eea eeb eec eee eer eia eib eic eie eii eij eir eja ejc eji era erb erc ere eri err ia- iaa iab iac iae iai iar iba ibb ibc ibe ibi ibj ibr ica icb icc ice ici icj icr ie- iea iec iee iei iej ier iia iib iic iie iii iij iir ija ijb ijc ije iji ir- ira irb irc ire iri irj irr j-i jaa jab jac jae jai jaj jar jba jbc jbi jbj jbr jca jcb jcc jce jci jcr jea jeb jec jee jei jej jer jia jib jic jie jii jij jir jja jjb jjc jjj jjr jra jrb jrc jri jrr ra- raa rab rac rae rai raj rar rba rbb rbc rbe rbi rbr rca rcb rcc rce rci rcj rcr re- rea reb rec ree rei rer ria rib ric rie rii rir rja rjc rjr rra rrb rrc rri rrr