C1111133313331323223313331333133313331323132232111133132321123122321   >>    C111113331333132322331333133313331333132313223211113313232112312232   <<    C1111133313331323223313331333133313331323132232111133132321123122323   >>      C1111133313331323223313331333133313331323132232111133132321123122322   >>