 R1a1a1b1a2b3* (M417+, Z645+, Z283+, Z282+, Z280+, CTS1211+, CTS3402, Y33+, CTS3318+, Y2613+) (Gwozdz's Cluster K) is a STR based group that is R-M17(xM458).This cluster is common in Poland but not exclusive to Poland.R1a1a1b1a2b3a (R-L365) was early called "Cluster G".