]-------0---0---[]-------0-----[]-------0-1-0---[]-----------------[]
]-1-1-3---1---3-[]-1-1-3---1-0-[]-1-1-3-------3-[]-1-0-------0-1-1-[]
]---------------[]-------------[]---------------[]-----0-2-0-------[]
]---------------[]-------------[]---------------[]-----------------[]
]---------------[]-------------[]---------------[]-----------------[]
]---------------[]-------------[]---------------[]-----------------[]
or
]---------------[]-------------[]---------------[]---------------[]
]---------------[]-------------[]---------------[]---------------[]
]---------------[]-------------[]---------------[]---------------[]
]-----0-2---2-0-[]-----2-0-----[]-----0-2-3-2-0-[]---------------[]
]-3-3-----3-----[]-3-3-----3-2-[]-3-3-----------[]-3-2---0-2-3-3-[]
]---------------[]-------------[]---------------[]-----3---------[]