-al a-a a-c aaa aac aad aaf aal aau ac- aca acc acd acf acl acu ad- ada adc add adf adl adu af- afa afc afd aff afl afu al- ala alc ald alf all alu au- aua auc aud auf aul c-- caa cac cad caf cal cau cca ccc ccd ccf ccl ccu cda cdc cdd cdf cdl cdu cfa cfc cfd cff cfl cfu cl- cla clc cld clf cll clu cua cuc cud cuf cul cuu daa dac dad daf dal dau dca dcc dcd dcf dcl dcu dda ddc ddd ddf ddl ddu dfa dfc dfd dff dfl dfu dl- dla dlc dld dlf dll dlu dua duc dud duf dul faa fac fad faf fal fau fca fcc fcd fcf fcl fcu fda fdc fdd fdf fdl fdu ffa ffc ffd fff ffl ffu fla flc fld flf fll flu fua fud fuf ful fuu la- laa lac lad laf lal lau lca lcc lcd lcf lcl lcu lda ldc ldd ldf ldl ldu lfa lfc lfd lff lfl lfu lla llc lld llf lll llu lua luc lud luf lul luu ua- uaa uac uad uaf ual uau uca ucc ucd ucf ucl ucu uda udc udd udf udl udu ufa ufc ufd uff ufl ufu ula ulc uld ulf ull ulu uua uuc uuu