do_praf_tmr := add_two_one_tmt &
	       [ +INPUT <>,
		 +CONTEXT < [ +FORM ^(.+)$ ], 
			    [ +FORM ^(n[ìií]|k[aàá]|k[ìií]|sh[ìií]|t[aàá]|m[uùú]|k[uùú]|s[uùú])$ ] >,
		 +OUTPUT < [ +FORM "${C1:+FORM:1}${C2:+FORM:1}" ] > ].

#|
complex_prep_tmr := add_two_one_tmt &
	       [ +INPUT <>,
		 +CONTEXT < [ +FORM ^(.*)$ ], 
			    [ +FORM ^(d[aàà])$ ] >,
		 +OUTPUT < [ +FORM "${C1:+FORM:1} ${C2:+FORM:1}" ] > ].
|#