What will be the output of the following code snippet?

#include <stdio.h>
void solve() {
    int ch = 2;
    switch(ch) {
        case 1: printf("1 ");
        case 2: printf("2 ");
        case 3: printf("3 ");
        default: printf("None");
    }
}
int main() {
    solve();
 return 0;
}

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