Long description

The first horizontal block is labeled 0 to 15, and 4 to 7 is labeled Process A's shared blocks which are shaded. The second horizontal block is labeled 0 to 15 and 4 to 7 is labeled A's shared block which is shaded and 6 to 9 is labeled B's shared block which is shaded. The third horizontal block is labeled 0 to 15 and 4 to 7 is labeled A and shaded, 6 to 9 is labeled B and shaded, and 2 to 11 is labeled C's shared block and shaded.