C2122121212121133132213231313231313231323223313231322331323331323133112121311   >>    C212212121212113313221323131323131323132322331323132233132333132313311212131   <<    C2122121212121133132213231313231313231323223313231322331323331323133112121313   >>      C2122121212121133132213231313231313231323223313231322331323331323133112121312   >>