C reads 0, left 00, inside: 0 (first at step 0)
C reads 0, left 01, inside: 0 (first at step 0)
C reads 0, left 10, inside: 0 (first at step 0)
C reads 0, left 11, inside: 0 (first at step 0)
C reads 0, left 00, at left edge: 33051 (first at step 5)
C reads 0, left 01, at left edge: 0 (first at step 0)
C reads 0, left 10, at left edge: 0 (first at step 0)
C reads 0, left 11, at left edge: 0 (first at step 0)