C1111233131211111211113313331323133313231323223313232233132211211311   >>    C111123313121111121111331333132313331323132322331323223313221121131   <<    C1111233131211111211113313331323133313231323223313232233132211211313   >>      C1111233131211111211113313331323133313231323223313232233132211211312   >>