#define ERROR                           1
#define NOT                             2
#define OR                              3
#define XOR                             4
#define AND                             5
#define NEAR                            6
#define LOVE                            7
#define HATE                            8
#define TERM                            9
#define PHR_TERM                       10
#define WILD_TERM                      11
#define BOOLEAN_FILTER                 12
#define QUOTE                          13
#define BRA                            14
#define KET                            15