1801sk12: KS-1
1801sk13: KS-2
1801sk14: KS-3
1801sk15: KS-4
1801sk16: KS-5
1801sk17: KS-6
1801sk18: KS-7
1801sk19: KS-8
1801sk20: KS-9
1801sk21: KS-10
1801sk22: KS-11
1801sk23: KS-12