1. The by-origin (the domestic-vs-the-foreign (the FDI-vs-the-portfolio (the 3.3's (the direct-the- control (the portfolio-the-papers (the hot-money (the volatility-contrast (the exam's-first- cut))))));
2. The by-object (the greenfield (the new-build (the brownfield (the existing-acquired (the M&A (the Ncell-type (the capital-gains-questions (the U6's-case)))); the joint-vs-the-wholly-owned (the 4.4's);
3. The by-duration (the long-vs-the-short (the venture (the fly-by-night (the exit (the IPO-and-the- sale))))));
4. The by-sector (the manufacturing-the-services-the-infrastructure (the hydro (the Nepal's- flagship (the energy-investment's-face)))));