C3132121111133313233121111331333133313331322331333132313231321121   >>    C313212111113331323312111133133313331333132233133313231323132112   <<    C3132121111133313233121111331333133313331322331333132313231321123   >>      C3132121111133313233121111331333133313331322331333132313231321122   >>