Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Title | Album | US R&B | US Pop | US Dance |
| --- | --- | --- | --- | --- | --- |
| 1989 | "Talk To Myself"/Sweet Memories | Adventures in Paradise A | 4 | 49 | 18 |
| 1989 | "Promises, Promises"/Lover Come Back | Adventures in Paradise A | 7 | - | - |
| 1990 | "One Girl"/Lover Come Back | Adventures in Paradise A | 31 | - | - |
| 1991 | "I'm Dreamin'" | New Jack City soundtrack | 1 | 89 | 16 |
| 1991 | "I Wanna B Ure Lover" | F.S. Effect featuring Christopher Williams | 52 | - | - |
| 1992 | "All I See" | Changes | 19 | - | 46 |
| 1993 | "Every Little Thing U Do" | Changes | 7 | 75 | - |
| 1993 | "Come Go with Me" | Changes | 74 | - | - |
| 1995 | "Dance 4 Me" | Not a Perfect Man | 25 | - | - |
| 1995 | "If You Say" | Not a Perfect Man | 91 | - | - |
Question:
how many christopher williams' songs made it into at least 2 of the 3 charts?
Answer:
3