starts_with_Y = '([Y][A-Za-z0-9]{6}([-][A-Za-z0-9]{1})?s)'
starts_with_t = '([t][a-zA-Z][][A-Za-z0-9]{3}[][A-Za-z0-9]([A-Za-z0-9])?s)'
starts_with_Q = '([Q]d{4}s)'
starts_with_RDN = '(b(w*RDNd{1,2}[-]dw*)b)'
starts_with_snR = '(b(w*snRd{1,3}([-][A-Za-z0-9])?w*)b[ ])'
starts_with_NME = '(NMEd{1}[ ])'
starts_with_ICR = '(ICRd{1}[ ])'
starts_with_LSR = '(LSRd{1}[ ])'

D      YHR077C NMD2; Nmd2p  K14327 UPF2; regulator of nonsense transcripts 2
D      YGR072W UPF3; Upf3p  K14328 UPF3; regulator of nonsense transcripts 3
D      snR19 SNR19  K14276 U1snRNA; U1 spliceosomal RNA
D      LSR1 LSR1    K14277 U2snRNA; U2 spliceosomal RNA
D      snR14 SNR14  K14278 U4snRNA; U4 spliceosomal RNA
D      snR7-S SNR7-S    K14279 U5snRNA; U5 spliceosomal RNA
D      snR7-L SNR7-L    K14279 U5snRNA; U5 spliceosomal RNA
D      snR6 SNR6    K14280 U6snRNA; U6 spliceosomal RNA
D      snR17a SNR17A    K14483 U3snoRNA; U3 small nucleolar RNA
D      snR17b SNR17B    K14483 U3snoRNA; U3 small nucleolar RNA