S1U1P3E1R1S1T1R1I1N1G2S1
15 points
SUPERSTRINGS is validvalid
SUPERSTRING, [n]
SUPERSTRING, a hypothetical very small one-dimensional particle from which other fundamental particles arise [n]
SUPERSTRING, [n]
SUPERSTRING, a hypothetical very small one-dimensional particle from which other fundamental particles arise [n]