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(A) type 1 endo lesion, (B) type 3 perio lesion, (C) type 2 (primary endo and secondary perio lesion) with horizontal bone loss, (D) type 4 (primary perio and secondary endo lesion) with vertical bone loss, (E) type 2 lesion with periapical pathology, and (F) type 4 lesion with periodontal abscess.
