case 2: snprintf(exp, size,"4 slots ");break;
case 3: snprintf(exp, size,"8 slots ");break;
default: snprintf(exp, size,"16 slots ");break;
case 2: snprintf(exp, size,"4 slots ");break;
case 3: snprintf(exp, size,"8 slots ");break;
default: snprintf(exp, size,"16 slots ");break;