#define OS_LEAD  &kp RALT &kp U  // OS specific sequence to initialize unicode
#define OS_TRAIL &kp RET         // OS specific sequence to terminate unicode

#define UNICODE_MACRO(NAME, UNICODE_BINDING) \
    NAME: NAME { \
        wait-ms = <1>; \
        tap-ms = <5>; \
        compatible = "zmk,behavior-macro"; \
        label = "NAME"; \
        #binding-cells = <0>; \
        bindings = <OS_LEAD UNICODE_BINDING OS_TRAIL>; \
    };

#define UNI_ONE(NAME, U0, U1, U2, U3) \
    macros { \
        UNICODE_MACRO(uc_##NAME, &kp U0 &kp U1 &kp U2 &kp U3) \
    }; 

#define UNI_TWO(NAME, U0, U1, U2, U3, S0, S1, S2, S3) \
    macros { \
        UNICODE_MACRO(uc_0_##NAME, &kp U0 &kp U1 &kp U2 &kp U3) \
        UNICODE_MACRO(uc_1_##NAME, &kp S0 &kp S1 &kp S2 &kp S3) \
    }; \
    behaviors { \
        uc_##NAME: uc_##NAME { \
            compatible = "zmk,behavior-mod-morph"; \
            label = "uc_##NAME"; \
            #binding-cells = <0>; \
            bindings = <&uc_0_##NAME>, <&uc_1_##NAME>; \
            mods = <MOD_LSFT|MOD_RSFT>; \
            masked_mods = <MOD_LSFT|MOD_RSFT>; \
        }; \
    };


// add some definitions here

UNI_ONE(alpha,  N0, N3,  B, N1)

UNI_TWO(ae,     N0, N0,  E, N4,     N0, N0,  C, N4)