 ┏━━━━━━━━━━━━┯━━━━━━━━━━━━━━┓
 ┃ Outer Left │ Outer Right  ┃
 ┣━━━━━━━━━━━━┿━━━━━━━━━━━━━━┫
 ┃ ┏━━━┯━━━┓  │ Regular cell ┃
 ┃ ┃ A │ B ┃  │              ┃
 ┃ ┠───┼───┨  │              ┃
 ┃ ┃ C │ D ┃  │              ┃
 ┃ ┗━━━┷━━━┛  │              ┃
 ┗━━━━━━━━━━━━┷━━━━━━━━━━━━━━┛
