C1111233133313231133133313331333133313231312111133133313223312321312321   >>    C111123313331323113313331333133313331323131211113313331322331232131232   <<    C1111233133313231133133313331333133313231312111133133313223312321312323   >>      C1111233133313231133133313331333133313231312111133133313223312321312322   >>