J2Adventure J2.
J3J3 J3J2.
J2J2aM410L152L212 / PF4988L559 / PF4986J2bM12M102M221M314 J2a1-M47.
1J2 J2J1 J15.
J1J2J3J4J5J6 J1J2J3 ; J4J5J6
Z-ETENICTY .
J2J3J3J2J2.
Schematic Editor J1J2.
J2+J2 J2 .
J_2 gapless valence bond solid binding valence bond [2] J_2 .
