C11111211113313112113313331333133313331333131133132212323132321   >>    C1111121111331311211331333133313331333133313113313221232313232   <<    C11111211113313112113313331333133313331333131133132212323132323   >>      C11111211113313112113313331333133313331333131133132212323132322   >>