no match : aaa_fgjkghd11__hfksdh11__0000
no match : aaa_fgjkghd11_hfksdh11__0000
no match : aaa_fgjkghd11hfksdh11__0000
no match : aaa_fgjkghd11__hfksdh11_0000
no match : aaa_fgjkghd11__hfksdh110000
no match : aaa_fgjk__ghd11_hfksdh1_10000
no match : aaa_fgjk__ghd11_hfksdh1_0000
no match : aa_fgjk__ghd11_hfksdh1_a000
   match : aaa_fgjk_ghd_11_hfksdh1_0000