import re
text = "I write a syntax of Regular Expression"
rx = r"\b[A-Z]\w*(?:\s+[A-Z]\w*)+"
result = ["".join(x.split()) for x in re.findall(rx, text)]
print(result)
aW1wb3J0IHJlCnRleHQgPSAiSSB3cml0ZSBhIHN5bnRheCBvZiBSZWd1bGFyIEV4cHJlc3Npb24iCnJ4ID0gciJcYltBLVpdXHcqKD86XHMrW0EtWl1cdyopKyIKcmVzdWx0ID0gWyIiLmpvaW4oeC5zcGxpdCgpKSBmb3IgeCBpbiByZS5maW5kYWxsKHJ4LCB0ZXh0KV0KcHJpbnQocmVzdWx0KQ==