Common use of Xxxxxxxx Clause in Contracts

Xxxxxxxx. 15X15, 4#3 Y #2 @ 15,CONCRETO 1:2:2 M.L. 141.38 19.6 XXXXXXXX 15X15cm, 4#4, #2@0.15m, CONC 1:2:2 ML 23.90

Xxxxxxxx. 15X15cm 4#3, 4#3 Y #2 @ 15,CONCRETO 3@15cm CONCRETO 1:2:2 M.L. 141.38 19.6 XXXXXXXX 15X15cm, 4#4, #2@0.15m, CONC 1:2:2 ML 23.9017.40

Xxxxxxxx. 15X15, 4#3 Y #2 @ 15,CONCRETO 1:2:2 M.L. 141.38 19.6 XXXXXXXX 15X15cm, 4#4, #2@0.15m, CONC 1:2:2 ML 23.908.40

Xxxxxxxx. 15X15, 4#3 Y #2 @ 15,CONCRETO 1:2:2 M.L. 141.38 19.6 XXXXXXXX 15X15cm, 4#4, #2@0.15m, CONC 1:2:2 ML 23.9020.68