I have lists such as
{{1, 1}, {8, 2}, {7, 4}, {1, 1}}
then
{{8, 2}, {15, 5}, {7, 4}, {8, 2}}
then
{{18, 4}, {15, 5}, {8, 2}, {18, 4}}
I want to create
{{{1, 1}, {8, 2}, {7, 4}, {1, 1}} , {{8, 2}, {15, 5}, {7, 4}, {8, 2}} , {{18, 4}, {15, 5}, {8, 2}, {18, 4}}}
I have tried AppendTo first list , second list, then AppendTo result to third list, but get
{{1, 1}, {8, 2}, {7, 4}, {1, 1}, {{8, 2}, {15, 5}, {7, 4}, {8, 2}}, {{18, 4}, {15, 5}, {8, 2}, {18, 4}}}
which is the wrong nesting. Any ideas?