# find da da da/s1 da/s1/f1 da/s1/f2 da/s2 da/s2/sx da/s2/sx/sa da/s2/sx/f4 da/s2/sx/f5 da/s2/sy da/s2/f3 da/s3 da/s3/sz da/s3/sz/f7 da/s3/sz/f8 da/s3/f6 da/s4