1. Cubeful 2-ply    13/8 6/4*                    Eq.:  +0.2137
       0.5256 0.1545 0.0075 - 0.4744 0.1236 0.0040
        2-ply cubeful prune [world class]
    2. Cubeful 2-ply    23/21 13/8                   Eq.:  +0.1989 ( -0.0147)
       0.5318 0.1377 0.0047 - 0.4682 0.1133 0.0024
        2-ply cubeful prune [world class]
    3. Cubeful 2-ply    6/4* 6/1*                    Eq.:  +0.1830 ( -0.0307)
       0.5185 0.1562 0.0068 - 0.4815 0.1349 0.0049
        2-ply cubeful prune [world class]
    4. Cubeful 2-ply    23/16                        Eq.:  +0.1758 ( -0.0379)
       0.5307 0.1291 0.0044 - 0.4693 0.1222 0.0029
        2-ply cubeful prune [world class]