C11112331312111112111133133313331333132112312111113331333132321323221   >>    C1111233131211111211113313331333133313211231211111333133313232132322   <<    C11112331312111112111133133313331333132112312111113331333132321323223   >>      C11112331312111112111133133313331333132112312111113331333132321323222   >>