C1111233131211111211113313331333133313133313231211111333132221212321   >>    C111123313121111121111331333133313331313331323121111133313222121232   <<    C1111233131211111211113313331333133313133313231211111333132221212323   >>      C1111233131211111211113313331333133313133313231211111333132221212322   >>