A set of oligonucleotide probes, said set comprising: (a) an oligonucleotide consisting of (ai) a nucleotide sequence selected from ACGCTTGCACCCT (SEQ ID NO 1), optionally with up to three substituted bases, and AGGGTGCAAGCGT (SEQ ID NO 27), optionally with up to three substituted bases, and (aii) 0-5 nucleotides in addition to (ai), wherein oligonucleotide (a) is capable of hybridising to SEQ ID NO 27 or SEQ ID NO 1, respectively, under conditions of high stringency; (b) an oligonucleotide consisting of (bi) a nucleotide sequence selected from CGATCCGAAAACCTTCTTCACT (SEQ ID NO 2), optionally with up to three substituted bases, and AGTGAAGAAGGTTTTCGGATCG (SEQ ID NO 28), optionally with up to three substituted bases, and (bii) 0-5 nucleotides in addition to (bi), wherein oligonucleotide (b) is capable of hybridising to SEQ ID NO 28 or SEQ ID NO 2, respectively, under conditions of high stringency; (c) an oligonucleotide consisting of (ci) a nucleotide sequence selected from GGACAACGCTTGCCAC (SEQ ID NO 3), optionally with up to three substituted bases, and GTGGCAAGCGTTGTCC (SEQ ID NO 29), optionally with up to three substituted bases, and (cii) 0-5 nucleotides in addition to (ci), wherein oligonucleotide (c) is capable of hybridising to SEQ ID NO 29 or SEQ ID NO 3, respectively, under conditions of high stringency; (d) an oligonucleotide consisting of (di) a nucleotide sequence selected from CGTAGGCGGTTCGTCGCGT (SEQ ID NO 4), optionally with up to three substituted bases, and ACGCGACGAACCGCCTACG (SEQ ID NO 30), optionally with up to three substituted bases, and (dii) 0-5 nucleotides in addition to (di), wherein oligonucleotide (d) is capable of hybridising to SEQ ID NO 30 or SEQ ID NO 4, respectively, under conditions of high stringency; and (e) one or more oligonucleotides consisting of (ei) a nucleotide sequence selected from those recited as SEQ ID Nos 5-8 and 31-34 in Table 1, optionally with up to three substituted bases, and (eii) 0-5 nucleotides in addition to (ei), wherein oligonucleotide (e) is capable of hybridising to the nucleotide sequence complementary to SEQ ID Nos 5-8 and 31-34, respectively, under conditions of high stringency; and optionally (f) one or more oligonucleotides consisting of (fi) a nucleotide sequence selected from those recited as SEQ ID Nos 9-26 and 35-52 in Table 2 and Table 3, optionally with up to three substituted bases and (fii) 0-5 nucleotides in addition to (fi), wherein oligonucleotide (f) is capable of hybridising to the nucleotide sequence complementary to SEQ ID Nos 9-26 and 35-52, respectively, under conditions of high stringency. (a) an oligonucleotide consisting of (ai) a nucleotide sequence selected from ACGCTTGCACCCT (SEQ ID NO 1), optionally with up to three substituted bases, and AGGGTGCAAGCGT (SEQ ID NO 27), optionally with up to three substituted bases, and (aii) 0-5 nucleotides in addition to (ai), wherein oligonucleotide (a) is capable of hybridising to SEQ ID NO 27 or SEQ ID NO 1, respectively, under conditions of high stringency; (b) an oligonucleotide consisting of (bi) a nucleotide sequence selected from CGATCCGAAAACCTTCTTCACT (SEQ ID NO 2), optionally with up to three substituted bases, and AGTGAAGAAGGTTTTCGGATCG (SEQ ID NO 28), optionally with up to three substituted bases, and (bii) 0-5 nucleotides in addition to (bi), wherein oligonucleotide (b) is capable of hybridising to SEQ ID NO 28 or SEQ ID NO 2, respectively, under conditions of high stringency; (c) an oligonucleotide consisting of (ci) a nucleotide sequence selected from GGACAACGCTTGCCAC (SEQ ID NO 3), optionally with up to three substituted bases, and GTGGCAAGCGTTGTCC (SEQ ID NO 29), optionally with up to three substituted bases, and (cii) 0-5 nucleotides in addition to (ci), wherein oligonucleotide (c) is capable of hybridising to SEQ ID NO 29 or SEQ ID NO 3, respectively, under conditions of high stringency; (d) an oligonucleotide consisting of (di) a nucleotide sequence selected from CGTAGGCGGTTCGTCGCGT (SEQ ID NO 4), optionally with up to three substituted bases, and ACGCGACGAACCGCCTACG (SEQ ID NO 30), optionally with up to three substituted bases, and (dii) 0-5 nucleotides in addition to (di), wherein oligonucleotide (d) is capable of hybridising to SEQ ID NO 30 or SEQ ID NO 4, respectively, under conditions of high stringency; and (e) one or more oligonucleotides consisting of (ei) a nucleotide sequence selected from those recited as SEQ ID Nos 5-8 and 31-34 in Table 1, optionally with up to three substituted bases, and (eii) 0-5 nucleotides in addition to (ei), wherein oligonucleotide (e) is capable of hybridising to the nucleotide sequence complementary to SEQ ID Nos 5-8 and 31-34, respectively, under conditions of high stringency; and optionally (f) one or more oligonucleotides consisting of (fi) a nucleotide sequence selected from those recited as SEQ ID Nos 9-26 and 35-52 in Table 2 and Table 3, optionally with up to three substituted bases and (fii) 0-5 nucleotides in addition to (fi), wherein oligonucleotide (f) is capable of hybridising to the nucleotide sequence complementary to SEQ ID Nos 9-26 and 35-52, respectively, under conditions of high stringency.