ok 1 - by Aristotle for case -1
ok 2 - by Aristotle for case 0
ok 3 - by Aristotle for case 1
ok 4 - by Aristotle for case 2
ok 5 - by Aristotle for case 3
ok 6 - by Aristotle for case 4
ok 7 - by Aristotle for case 5
ok 8 - by bobn for case -1
ok 9 - by bobn for case 0
ok 10 - by bobn for case 1
ok 11 - by bobn for case 2
ok 12 - by bobn for case 3
ok 13 - by bobn for case 4
ok 14 - by bobn for case 5
ok 15 - by Fatvamp for case -1
ok 16 - by Fatvamp for case 0
ok 17 - by Fatvamp for case 1
ok 18 - by Fatvamp for case 2
ok 19 - by Fatvamp for case 3
ok 20 - by Fatvamp for case 4
ok 21 - by Fatvamp for case 5