77   X(const X &other) : Copyable(other) {}  in X()
81   X2(const X2 &other) {}  in X2()
93   X3(const X3 &other) : Copyable(other) {}  in X3()
99   X4(const X4 &other) : Copyable() {}  in X4()
105   X5(const X5 &other) {}  in X5()
111   X6(const X6 &other) {}  in X6()
117   X7(const X7 &other) : Copyable() {}  in X7()
123   X8(const X8 &other) : Copyable4(other) {}  in X8()
127   X9(const X9 &other) : Copyable4() {}  in X9()
133   X10(const X10 &other) {}  in X10()
139   X11(const X11 &other) {}  in X11()
145   X12(const X12 &other) {}  in X12()
151   X13(const X13 &other) {}  in X13()
166   X15(const X15 &other) {}  in X15()
172   X16(const X16 &other) {}  in X16()
176   X17(const X17 &other) {}  in X17()
180   X18(const X18 &other) {}  in X18()
186   X19(const X19 &other) : Copyable(other) {}  in X19()