-al -ic a-a a-b a-c a-i aaa aab aac aae aaf aai aak aal ab- aba abb abc abe abf abi abk abl ac- aca acb acc ace acf aci ack acl aea aeb aec aee aef aei aek ael af- afa afb afc afe aff afi afk afl ai- aia aib aic aie aif aii aik ail aka akb akc ake aki akk akl al- ala alb alc ale alf ali alk all baa bab bac bae baf bai bak bal bba bbb bbc bbe bbf bbi bbk bbl bca bcb bcc bce bcf bci bck bcl be- bea beb bec bee bef bei bek bel bfa bfb bfc bfe bff bfi bfl bi- bia bib bic bie bif bii bik bil bka bkb bkc bke bkf bkk bkl bla blb blc ble blf bli blk bll c-- caa cab cac cae caf cai cak cal cba cbb cbc cbe cbf cbi cbk cbl cca ccb ccc cce ccf cci cck ccl ce- cea ceb cec cee cef cei cek cel cfa cfb cfc cfe cff cfi cfk cfl ci- cia cib cic cie cif cii cik cil cka ckb ckc cki cl- cla clb clc cle clf cli clk cll eaa eab eac eae eaf eai eak eal eba ebb ebc ebe ebf ebi ebk ebl ec- eca ecb ecc ece ecf eci eck ecl eea eeb eec eee eef eek eel ef- efa efb efc efe eff efi efl eia eib eic eie eif eii eik eil eka ekb ekc eke ekf eki ekl ela elb elc ele elf eli elk ell faa fab fac fae faf fai fak fal fba fbb fbc fbe fbf fbi fbk fbl fca fcb fcc fce fcf fci fck fcl fea feb fec fee fef fei fek fel ffa ffc ffe fff ffi ffk ffl fia fib fic fie fif fii fik fil fka fkb fkc fkf fki fkk fkl fla flb flc fle flf fli fll i-f ia- iaa iab iac iae iaf iai ial iba ibb ibc ibe ibf ibi ibk ibl ica icb icc ice icf ici ick icl ie- iea iec iee ief iei iek iel ifa ifb ifc ife iff ifi ifl iia iib iic iie iif iii iil ika ikb ikc ike ikf iki ikk ikl il- ila ilb ilc ile ilf ili ilk ill ka- kaa kab kac kae kaf kai kak kal kba kbb kbc kbe kbf kbi kbk kbl kca kcb kcc kce kci kck kcl ke- kea keb kec kee kef kei kek kel kfa kfc kff kfi kia kib kic kie kif kii kik kil kkb kkc kke kki kkk kkl kl- kla klb klc klf kli la- laa lab lac lae laf lai lak lal lba lbb lbc lbe lbf lbi lbk lbl lca lcb lcc lce lcf lci lck lcl lea leb lec lee lef lei lek lel lfa lfb lfc lfe lff lfi lfk lfl lia lib lic lie lif lii lik lil lka lkb lkl lla llb llc lle llf lli llk lll