C2122121212121133132213231313231313231323223313231322331323221333221   >>    C212212121212113313221323131323131323132322331323132233132322133322   <<    C2122121212121133132213231313231313231323223313231322331323221333223   >>      C2122121212121133132213231313231313231323223313231322331323221333222   >>