import re
strings = [
"\".A.B.C.D.E.F.G.H.I.J\"",
"\".K.Y.C.A.N.Y.W.H.I.A.W...1.B...1.1.7\"",
"\"Testing using quotes func \"quot\".\"",
"A.b.e.f. testing test"
]
for s in strings:
print(re.sub(r"\.(?=\.?[A-Z0-9])", '', s))
aW1wb3J0IHJlCgpzdHJpbmdzID0gWwogICAgIlwiLkEuQi5DLkQuRS5GLkcuSC5JLkpcIiIsCiAgICAiXCIuSy5ZLkMuQS5OLlkuVy5ILkkuQS5XLi4uMS5CLi4uMS4xLjdcIiIsCiAgICAiXCJUZXN0aW5nIHVzaW5nIHF1b3RlcyBmdW5jIFwicXVvdFwiLlwiIiwKICAgICJBLmIuZS5mLiB0ZXN0aW5nIHRlc3QiCl0KCmZvciBzIGluIHN0cmluZ3M6CiAgICBwcmludChyZS5zdWIociJcLig/PVwuP1tBLVowLTldKSIsICcnLCBzKSk=