-al a-a aaa aad aaf aal aar ad- ada add adf adl adr af- afa afd aff afl afr al- ala ald alf all alr ar- ara ard arf arl arr daa dad daf dal dar dda ddd ddf ddl ddr dfa dfd dff dfl dfr dl- dla dld dlf dll dlr dra drd drl drr faa fad faf fal far fda fdd fdf fdl fdr ffa ffd fff ffl ffr fla fld flf fll flr fra frd frf frl frr la- laa lad laf lal lar lda ldd ldf ldl ldr lfa lfd lff lfl lfr lla lld llf lll llr lra lrd lrf lrr ra- raa rad raf ral rar rda rdd rdf rdl rdr rfa rfd rff rfl rfr rla rld rlf rll rlr rra rrd rrf rrl rrr