C11111211113313112113313331333133313331333131211113313232212111133131322221   >>    C1111121111331311211331333133313331333133313121111331323221211113313132222   <<    C11111211113313112113313331333133313331333131211113313232212111133131322223   >>      C11111211113313112113313331333133313331333131211113313232212111133131322222   >>