C1111133313331323223313331333133313331323223331211111233132313231   >>    C111113331333132322331333133313331333132322333121111123313231323   <<    C1111133313331323223313331333133313331323223331211111233132313233   >>      C1111133313331323223313331333133313331323223331211111233132313232   >>