Before revision:  In all MSTs, a core-fringe structure is found, with CY, IN, and NC consistently making up the core, and BM, EN, HC, TL, UT residing predominantly on the fringe.
After revision:  In all MSTs, a core-fringe structure is found, with CY, IN, and NC consistently making up the core, and basic materials, oil and gas, healthcare, telecommunications, and utilities residing predominantly on the fringe.