【计】 commutative primitive
approve; but; can; may; need; yet
exchange; interchange; change for; commute; permutation; reciprocation
replacement
【计】 exchange; swap; swapping; switching; transput; X
【医】 chiasmapy; cross-over; crossing-over
【经】 interchange; swap
former; original
【化】 ortho-
【医】 arch-; arche-; ortho-; pro-; prot-; proto-
language; proverb; sign; signal; speak; vocable; words