C1111233133313231133133313231333133313113313113313231333223313222321   >>    C111123313331323113313331323133313331311331311331323133322331322232   <<    C1111233133313231133133313231333133313113313113313231333223313222323   >>      C1111233133313231133133313231333133313113313113313231333223313222322   >>