Letters that make inter-service support
s, o, e, n, p, c, r, t, i, u, v are letters that make 'inter-service support'
Words within inter-service support
ER, ice, ICE, OR, RV, vice, te, sup, NT, PO, IC, Service, SE, inter, support, up, port, vi, ic, CE, in, service, VI, IN, Po, Ce, Er, In, Se, Te are words within 'inter-service support'