C3132121111133313233121111331333133313331322331333132313233232321   >>    C313212111113331323312111133133313331333132233133313231323323232   <<    C3132121111133313233121111331333133313331322331333132313233232323   >>      C3132121111133313233121111331333133313331322331333132313233232322   >>