1©     (X)     1ª = nat

                   INT = §

                   2§ = ¨

                   2¨ =  © constructive

                   2© = raise 0-6 HCP

1ª     (X)     INT = §

                   2§ = ¨

                   2¨ =  ©

                   2© = ª constructive

2ª = raise 0-6 HCP