!Name: P56 B-heptomino shuttle
!Author: David Buckingham
!The smallest known period 56 oscillator
.......................OO
.......................OO


......OO................OO
......OO..............O.OO
......................O
......................O
......................O..O
......O................OO
.....O.OO
.OO..O..O
.OO.....O


..OO..............OO
O.OO..............OO
O
O
O..O
.OO