C11111333133313232233133313331333133313233231331123231323132223221   >>    C1111133313331323223313331333133313331323323133112323132313222322   <<    C11111333133313232233133313331333133313233231331123231323132223223   >>      C11111333133313232233133313331333133313233231331123231323132223222   >>