1 | 5. a:x,y:T//(x R y). a Q a 6. a,b:x,y:T//(x R y). (a Q b)  (b Q a) 7. a,b,c:x,y:T//(x R y). (a Q b)  (b Q c)  (a Q c) 8. a: T a Q a |
2 | 5. a:x,y:T//(x R y). a Q a 6. a,b:x,y:T//(x R y). (a Q b)  (b Q a) 7. a,b,c:x,y:T//(x R y). (a Q b)  (b Q c)  (a Q c) 8. a: T 9. b: T 10. a Q b b Q a |
3 | 5. a:x,y:T//(x R y). a Q a 6. a,b:x,y:T//(x R y). (a Q b)  (b Q a) 7. a,b,c:x,y:T//(x R y). (a Q b)  (b Q c)  (a Q c) 8. a: T 9. b: T 10. c: T 11. a Q b 12. b Q c a Q c |