C1111133313331323223313331333133313331333131333133313331333133323133312121   >>    C111113331333132322331333133313331333133313133313331333133313332313331212   <<    C1111133313331323223313331333133313331333131333133313331333133323133312123   >>      C1111133313331323223313331333133313331333131333133313331333133323133312122   >>