C3123121111113313121111331323133313331333132321323133313232213223311   >>    C312312111111331312111133132313331333133313232132313331323221322331   <<    C3123121111113313121111331323133313331333132321323133313232213223313   >>      C3123121111113313121111331323133313331333132321323133313232213223312   >>