C2122121212121133132213231313231313231323223313231322331323111311   >>    C212212121212113313221323131323131323132322331323132233132311131   <<    C2122121212121133132213231313231313231323223313231322331323111313   >>      C2122121212121133132213231313231313231323223313231322331323111312   >>