C132233133112121111331333133313331333132322331333133313232212221   >>    C13223313311212111133133313331333133313232233133313331323221222   <<    C132233133112121111331333133313331333132322331333133313232212223   >>      C132233133112121111331333133313331333132322331333133313232212222   >>