local mod = 1000000007
local mfl = math.floor

local function bmul(x, y)
  local x0, y0 = x % 31623, y % 31623
  local x1, y1 = mfl(x / 31623), mfl(y / 31623)
  return (x1 * y1 * 14122 + (x1 * y0 + x0 * y1) * 31623 + x0 * y0) % mod
end

local function badd(x, y)
  return (x + y) % mod
end

local function bsub(x, y)
  return x < y and x - y + mod or x - y
end
local function modpow(src, pow)
  local res = 1
  while 0 < pow do
    if pow % 2 == 1 then
      res = bmul(res, src)
      pow = pow - 1
    end
    src = bmul(src, src)
    pow = mfl(pow / 2)
  end
  return res
end

local function modinv(src)
  return modpow(src, mod - 2)
end

local r1, c1 = io.read("*n", "*n")
local r2, c2 = io.read("*n", "*n")

local function getSum(r, c)
  local sum = 0
  local cur = 1
  for ir = 0, r do
    cur = bmul(cur, ir + c + 1)
    cur = bmul(cur, modinv(ir + 1))
    sum = badd(sum, cur)
  end
  return sum
end
local z = getSum(r2, c2)
z = bsub(z, getSum(r2, c1 - 1))
z = bsub(z, getSum(r1 - 1, c2))
z = badd(z, getSum(r1 - 1, c1 - 1))
print(z)
