Count-Min, stream ABACDABA
  row 0: [0, 5, 0, 1, 2, 0]
  row 1: [4, 0, 3, 0, 0, 1]
  row 2: [1, 0, 0, 5, 0, 2]
  query A: cells=[5, 4, 5] est=4 true=4
  query B: cells=[2, 3, 2] est=2 true=2
  query C: cells=[5, 1, 1] est=1 true=1
  query D: cells=[1, 3, 5] est=1 true=1
  query X: cells=[5, 3, 5] est=3 true=0
Conservative update, same stream
  row 0: [0, 4, 0, 1, 2, 0]
  row 1: [4, 0, 2, 0, 0, 1]
  row 2: [1, 0, 0, 4, 0, 2]
  query A: cells=[4, 4, 4] est=4 true=4
  query B: cells=[2, 2, 2] est=2 true=2
  query C: cells=[4, 1, 1] est=1 true=1
  query D: cells=[1, 2, 4] est=1 true=1
  query X: cells=[4, 2, 4] est=2 true=0
next D (standard): cells before=[1, 3, 5] after=[2, 4, 6]
next D (conservative): cells before=[1, 3, 5] after=[2, 3, 5]