C1111233131211111211113313331333131211111211111333133313331333132321323221   >>    C111123313121111121111331333133313121111121111133313331333133313232132322   <<    C1111233131211111211113313331333131211111211111333133313331333132321323223   >>      C1111233131211111211113313331333131211111211111333133313331333132321323222   >>