df1 <- data.frame(Background = factor(c("Input", "H3", "Overlap","Input", "H3", "Overlap"), levels=c("Input", "H3", "Overlap")),
            Condition = factor(c("control", "control", "control","treatment", "treatment", "treatment")),
            Count = c(10, 9, 5, 8, 7, 6))

barplot = ggplot(data=df1, aes(x=Condition, y=Count, fill=Background)) +
    geom_bar(position=position_dodge()) +
    facet_grid(. ~ Condition)

barplot = ggplot(data=df1, aes(x=Background, y=Count, fill=Background)) +
  geom_bar(position='dodge') +
  facet_grid(.~Condition)