Transaction (0, 0) WRITE(0, 0) Transaction (1, 1) READ(0, 0) WRITE(0, 1) Transaction (1, 2) READ(0, 1) WRITE(0, 2) Transaction (1, 3) READ(0, 2) WRITE(0, 3) Transaction (1, 4) READ(0, 3) WRITE(0, 4) Transaction (1, 5) READ(0, 4) WRITE(0, 5) Transaction (1, 6) READ(0, 5) WRITE(0, 6) Transaction (1, 7) READ(0, 19) WRITE(0, 7) Transaction (1, 8) READ(0, 7) WRITE(0, 8) Transaction (1, 9) READ(0, 8) WRITE(0, 9) Transaction (1, 10) READ(0, 9) WRITE(0, 10) Transaction (2, 11) READ(0, 1) WRITE(0, 11) Transaction (2, 12) READ(0, 11) WRITE(0, 12) Transaction (2, 13) READ(0, 4) WRITE(0, 13) Transaction (2, 14) READ(0, 6) WRITE(0, 14) Transaction (2, 15) READ(0, 14) WRITE(0, 15) Transaction (2, 16) READ(0, 15) WRITE(0, 16) Transaction (2, 17) READ(0, 16) WRITE(0, 17) Transaction (2, 18) READ(0, 17) WRITE(0, 18) Transaction (2, 19) READ(0, 18) WRITE(0, 19) Transaction (2, 20) READ(0, 19) WRITE(0, 20)