-al -er a-a a-c aaa aac aae aah aal aar aax ac- aca acc ace ach acl acr acx aea aec aee aeh ael aer aex aha ahc ahe ahh ahl ahr ahx al- ala alc ale alh all alr alx ar- ara arc are arh arl arr arx ax- axa axe axh axl axr axx c-- caa cac cae cah cal car cax cca ccc cce cch ccl ccr ccx ce- cea cec cee ceh cel cer cex ch- cha chc che chh chl chr chx cl- cla clc cle clh cll clr clx cra crc cre crh crl crr crx cxc cxh cxl cxr cxx eaa eac eae eah eal ear eax ec- eca ecc ece ech ecl ecr ecx eea eec eee eel eer eex eha ehc ehe ehh ehl ehr ela elc ele elh ell elr elx era erc ere erh erl err ex- exa exc exe exh exl exr exx haa hac hae hah hal har hax hca hcc hce hch hcl hcr he- hea hec hee heh hel her hex hha hhc hhe hhh hhl hhr hla hlc hle hlh hll hlr hlx hr- hra hrc hre hrh hrl hrr hxc hxl la- laa lac lae lah lal lar lax lca lcc lce lch lcl lcr lcx lea lec lee leh lel ler lex lha lhc lhh lhr lhx lla llc lle lll llr lra lrc lrh lrr lxc lxr lxx ra- raa rac rae rah ral rar rax rca rcc rce rch rcl rcr rcx re- rea rec ree reh rel rer rex rh- rha rhc rhe rhh rhl rhr rla rlc rle rlh rll rlr rra rrc rrh rrl rrr rxr xaa xac xal xar xch xcl xcr xcx xee xel xer xex xla xlr xrc xrx xxl xxx