C1111133313331323223313331333133313231323132312111133131133122321   >>    C111113331333132322331333133313331323132313231211113313113312232   <<    C1111133313331323223313331333133313231323132312111133131133122323   >>      C1111133313331323223313331333133313231323132312111133131133122322   >>