我的文件已满了这个列表：
om.troook1
afmm1989 aalkhulaifi2525 atamayz esraa_e10 worldwise_hmak a.17.salolo
aldana_alshmmary isra_00f 5atheet_38li raedalmajed80 6ooney11 3dooo17
alatwah44 7bw__ 59po ___miral.2 howassad duhdugfgdskbyhcgfh
l250j pluvas.jr29 hmaad_rfaao _albtoul_3 fheed_alsenawy a______ziz
78__na reemahals89 ahmad.jowhar bee3_u fad.11224 mitchi_minouche
salehalbekhet iam121__ ihia.76 jr3t_aml yournextride bagais_omar
al_aml_2 irox_305 1gmk __almlak faisal4557 wtfariiana
7ii_z mubarakqurris a_0555974170 m_azaadi_q8 abooodi1235 bbefsalam
aied_alshahrani 23w3 qqwweerr1235 noor_fha hiplikejacobilyy rshd2693
alanouoood anoir.20 ahmadou11 alrssam1 aboooood7778 amayraraaqiy
mashan_mneef fofo._._._._._7 abd212398 xxwaleedoxx 7.rxri abdulrahman1771
neima44 n.5133 dgff3922 loaykhalil13 8cxm yousifalmulhim
mhmdly9305 tlalal___shammry25 alhnoooooooooffffff desielvita 4mot al3nze_vib_1
banyyanal3rjane95 azeez__28 fah956 dl3_kla93 alfaraj15_ bostr_5
khaledh139 sootk_2012 almlek_1985 s.lfyf 4fal imlzoord
__alnaef fmt2060 fufo_x_o l4xj aljoker_rab_24 aaaaaa88990
omsaad_h alhot_king_delivery nov.h79 xhatem9 reem_____7 alrashdi.a
bshbshsh.85x h_s_h_s_502
如何删除正确的用户名，并使用notepad ++ regex将其保留在左侧？