C13223313311212111133133313331333133313231323133212111112233111   >>    C1322331331121211113313331333133313331323132313321211111223311   <<    C13223313311212111133133313331333133313231323133212111112233113   >>      C13223313311212111133133313331333133313231323133212111112233112   >>