func_ss_dir1 func_ss_dir1 sr2r hr2r si2r sr2o hi2r hr2o sr2r hr2r si2r sr2o hi2r hr2o wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep wns tns fep -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2 -1 -2 2