C11111333133313232233133313331333132313123231322132313231323132322221   >>    C1111133313331323223313331333133313231312323132213231323132313232222   <<    C11111333133313232233133313331333132313123231322132313231323132322223   >>      C11111333133313232233133313331333132313123231322132313231323132322222   >>