alt/base_attr3_alt1.nit:25,3--4: Error: method or variable `a3` unknown in `B`.
alt/base_attr3_alt1.nit:26,3--4: Error: method or variable `a3=` unknown in `B`.
alt/base_attr3_alt1.nit:31,3--4: Error: method or variable `a6` unknown in `B`.
alt/base_attr3_alt1.nit:37,3--4: Error: method or variable `a9` unknown in `B`.
alt/base_attr3_alt1.nit:40,3--5: Error: method or variable `a10=` unknown in `B`.
alt/base_attr3_alt1.nit:42,3--5: Error: method or variable `a11=` unknown in `B`.
alt/base_attr3_alt1.nit:43,3--5: Error: method or variable `a12` unknown in `B`.
alt/base_attr3_alt1.nit:44,3--5: Error: method or variable `a12=` unknown in `B`.