17
one<>three<>1 0.5556 13 5 5
one<>two<>2 0.5000 13 7 5
two<>two<>3 0.4000 3 7 2
one<>four<>4 0.3333 13 5 3
three<>four<>4 0.3333 1 5 1
two<>four<>5 0.2500 3 5 1