from math import inf


def main():
    x = [tuple(map(int, input().split())) for i in range(7)]

    totmin, totmax = min(a for a, _ in x), max(b for _, b in x)

    def isect(*a):
        f, s = zip(*a)
        return (max(f), min(s))

    def cnt(a):
        x, y = a
        return max(0, y-x+1)

    def solve3(a, b, c):
        ans = cnt(a) * cnt(b) * cnt(c)
        ans -= cnt(isect(a, b)) * cnt(c)
        ans -= cnt(isect(a, c)) * cnt(b)
        ans -= cnt(isect(b, c)) * cnt(a)
        ans += 2 * cnt(isect(a, b, c))
        return ans

    def solve4(a, b, c, d):
        ans = cnt(a) * cnt(b) * cnt(c) * cnt(d)
        ans -= cnt(isect(a, b)) * cnt(c) * cnt(d)
        ans -= cnt(isect(a, c)) * cnt(b) * cnt(d)
        ans -= cnt(isect(a, d)) * cnt(b) * cnt(c)
        ans -= cnt(isect(b, c)) * cnt(a) * cnt(d)
        ans -= cnt(isect(b, d)) * cnt(a) * cnt(c)
        ans -= cnt(isect(c, d)) * cnt(a) * cnt(b)
        ans += 2 * cnt(isect(a, b, c)) * cnt(d)
        ans += 2 * cnt(isect(a, b, d)) * cnt(c)
        ans += 2 * cnt(isect(a, c, d)) * cnt(b)
        ans += 2 * cnt(isect(b, c, d)) * cnt(a)
        ans += cnt(isect(a, b)) * cnt(isect(c, d))
        ans += cnt(isect(a, c)) * cnt(isect(b, d))
        ans += cnt(isect(a, d)) * cnt(isect(b, c))
        ans -= 6 * cnt(isect(a, b, c, d))
        return ans

    ans = 0
    for i in range(totmin, totmax+1):
        ans += (solve4(*[isect(rng, (-inf, i)) for rng in x[0::2]]) -
                solve4(*[isect(rng, (-inf, i-1)) for rng in x[0::2]])) * \
            solve3(*[isect(rng, (i+1, inf)) for rng in x[1::2]])
        ans += solve3(*[isect(rng, (-inf, i)) for rng in x[1::2]]) * \
            (solve4(*[isect(rng, (i+1, inf)) for rng in x[0::2]]) -
             solve4(*[isect(rng, (i+2, inf)) for rng in x[0::2]]))

    print(ans % (10**9 + 7))


if __name__ == '__main__':
    main()